<?php
 /*
     pDraw - class extension with drawing methods

     Version     : 2.1.4
     Made by     : Jean-Damien POGOLOTTI
     Last Update : 19/01/2014

     This file can be distributed under the license you can find at :

                       http://www.pchart.net/license

     You can find the whole class documentation on the pChart web site.
 */

 define("DIRECTION_VERTICAL", 690001);
 define("DIRECTION_HORIZONTAL", 690002);

 define("SCALE_POS_LEFTRIGHT", 690101);
 define("SCALE_POS_TOPBOTTOM", 690102);

 define("SCALE_MODE_FLOATING", 690201);
 define("SCALE_MODE_START0", 690202);
 define("SCALE_MODE_ADDALL", 690203);
 define("SCALE_MODE_ADDALL_START0", 690204);
 define("SCALE_MODE_MANUAL", 690205);

 define("SCALE_SKIP_NONE", 690301);
 define("SCALE_SKIP_SAME", 690302);
 define("SCALE_SKIP_NUMBERS", 690303);

 define("TEXT_ALIGN_TOPLEFT", 690401);
 define("TEXT_ALIGN_TOPMIDDLE", 690402);
 define("TEXT_ALIGN_TOPRIGHT", 690403);
 define("TEXT_ALIGN_MIDDLELEFT", 690404);
 define("TEXT_ALIGN_MIDDLEMIDDLE", 690405);
 define("TEXT_ALIGN_MIDDLERIGHT", 690406);
 define("TEXT_ALIGN_BOTTOMLEFT", 690407);
 define("TEXT_ALIGN_BOTTOMMIDDLE", 690408);
 define("TEXT_ALIGN_BOTTOMRIGHT", 690409);

 define("POSITION_TOP", 690501);
 define("POSITION_BOTTOM", 690502);

 define("LABEL_POS_LEFT", 690601);
 define("LABEL_POS_CENTER", 690602);
 define("LABEL_POS_RIGHT", 690603);
 define("LABEL_POS_TOP", 690604);
 define("LABEL_POS_BOTTOM", 690605);
 define("LABEL_POS_INSIDE", 690606);
 define("LABEL_POS_OUTSIDE", 690607);

 define("ORIENTATION_HORIZONTAL", 690701);
 define("ORIENTATION_VERTICAL", 690702);
 define("ORIENTATION_AUTO", 690703);

 define("LEGEND_NOBORDER", 690800);
 define("LEGEND_BOX", 690801);
 define("LEGEND_ROUND", 690802);

 define("LEGEND_VERTICAL", 690901);
 define("LEGEND_HORIZONTAL", 690902);

 define("LEGEND_FAMILY_BOX", 691051);
 define("LEGEND_FAMILY_CIRCLE", 691052);
 define("LEGEND_FAMILY_LINE", 691053);

 define("DISPLAY_AUTO", 691001);
 define("DISPLAY_MANUAL", 691002);

 define("LABELING_ALL", 691011);
 define("LABELING_DIFFERENT", 691012);

 define("BOUND_MIN", 691021);
 define("BOUND_MAX", 691022);
 define("BOUND_BOTH", 691023);

 define("BOUND_LABEL_POS_TOP", 691031);
 define("BOUND_LABEL_POS_BOTTOM", 691032);
 define("BOUND_LABEL_POS_AUTO", 691033);

 define("CAPTION_LEFT_TOP", 691041);
 define("CAPTION_RIGHT_BOTTOM", 691042);

 define("GRADIENT_SIMPLE", 691051);
 define("GRADIENT_EFFECT_CAN", 691052);

 define("LABEL_TITLE_NOBACKGROUND", 691061);
 define("LABEL_TITLE_BACKGROUND", 691062);

 define("LABEL_POINT_NONE", 691071);
 define("LABEL_POINT_CIRCLE", 691072);
 define("LABEL_POINT_BOX", 691073);

 define("ZONE_NAME_ANGLE_AUTO", 691081);

 define("PI", 3.14159265);
 define("ALL", 69);
 define("NONE", 31);
 define("AUTO", 690000);
 define("OUT_OF_SIGHT", -10000000000000);

 class pDraw
 {
     /* Returns the number of drawable series */
     public function countDrawableSeries()
     {
         $Results = 0;
         $Data = $this->DataSet->getData();

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $Results++;
             }
         }

         return($Results);
     }

     /* Fix box coordinates */
     public function fixBoxCoordinates($Xa, $Ya, $Xb, $Yb)
     {
         $X1 = min($Xa, $Xb);
         $Y1 = min($Ya, $Yb);
         $X2 = max($Xa, $Xb);
         $Y2 = max($Ya, $Yb);

         return(array($X1,$Y1,$X2,$Y2));
     }

     /* Draw a polygon */
     public function drawPolygon($Points, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 0;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $NoFill		= isset($Format["NoFill"]) ? $Format["NoFill"] : false;
         $NoBorder		= isset($Format["NoBorder"]) ? $Format["NoBorder"] : false;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : $R;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : $G;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : $B;
         $BorderAlpha 	= isset($Format["Alpha"]) ? $Format["Alpha"] : $Alpha / 2;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $SkipX		= isset($Format["SkipX"]) ? $Format["SkipX"] : OUT_OF_SIGHT;
         $SkipY		= isset($Format["SkipY"]) ? $Format["SkipY"] : OUT_OF_SIGHT;

         /* Calling the ImageFilledPolygon() function over the $Points array will round it */
         $Backup = $Points;

         if ($Surrounding != null) {
             $BorderR = $R+$Surrounding;
             $BorderG = $G+$Surrounding;
             $BorderB = $B+$Surrounding;
         }

         if ($SkipX != OUT_OF_SIGHT) {
             $SkipX = floor($SkipX);
         }
         if ($SkipY != OUT_OF_SIGHT) {
             $SkipY = floor($SkipY);
         }

         $RestoreShadow = $this->Shadow;
         if (!$NoFill) {
             if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
                 $this->Shadow = false;
                 for ($i=0;$i<=count($Points)-1;$i=$i+2) {
                     $Shadow[] = $Points[$i] + $this->ShadowX;
                     $Shadow[] = $Points[$i+1] + $this->ShadowY;
                 }
                 $this->drawPolygon($Shadow, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa,"NoBorder"=>true));
             }

             $FillColor = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);

             if (count($Points) >= 6) {
                 ImageFilledPolygon($this->Picture, $Points, count($Points)/2, $FillColor);
             }
         }

         if (!$NoBorder) {
             $Points = $Backup;

             if ($NoFill) {
                 $BorderSettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha);
             } else {
                 $BorderSettings = array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha);
             }

             for ($i=0;$i<=count($Points)-1;$i=$i+2) {
                 if (isset($Points[$i+2])) {
                     if (!($Points[$i] == $Points[$i+2] && $Points[$i] == $SkipX) && !($Points[$i+1] == $Points[$i+3] && $Points[$i+1] == $SkipY)) {
                         $this->drawLine($Points[$i], $Points[$i+1], $Points[$i+2], $Points[$i+3], $BorderSettings);
                     }
                 } else {
                     if (!($Points[$i] == $Points[0] && $Points[$i] == $SkipX) && !($Points[$i+1] == $Points[1] && $Points[$i+1] == $SkipY)) {
                         $this->drawLine($Points[$i], $Points[$i+1], $Points[0], $Points[1], $BorderSettings);
                     }
                 }
             }
         }

         $this->Shadow = $RestoreShadow;
     }

     /* Apply AALias correction to the rounded box boundaries */
     public function offsetCorrection($Value, $Mode)
     {
         $Value = round($Value, 1);

         if ($Value == 0 && $Mode == 1) {
             return(.9);
         }
         if ($Value == 0) {
             return(0);
         }

         if ($Mode == 1) {
             if ($Value == 1) {
                 return(.9);
             };
             if ($Value == .1) {
                 return(.9);
             };
             if ($Value == .2) {
                 return(.8);
             };
             if ($Value == .3) {
                 return(.8);
             };
             if ($Value == .4) {
                 return(.7);
             };
             if ($Value == .5) {
                 return(.5);
             };
             if ($Value == .6) {
                 return(.8);
             };
             if ($Value == .7) {
                 return(.7);
             };
             if ($Value == .8) {
                 return(.6);
             };
             if ($Value == .9) {
                 return(.9);
             };
         }

         if ($Mode == 2) {
             if ($Value == 1) {
                 return(.9);
             };
             if ($Value == .1) {
                 return(.1);
             };
             if ($Value == .2) {
                 return(.2);
             };
             if ($Value == .3) {
                 return(.3);
             };
             if ($Value == .4) {
                 return(.4);
             };
             if ($Value == .5) {
                 return(.5);
             };
             if ($Value == .6) {
                 return(.8);
             };
             if ($Value == .7) {
                 return(.7);
             };
             if ($Value == .8) {
                 return(.8);
             };
             if ($Value == .9) {
                 return(.9);
             };
         }

         if ($Mode == 3) {
             if ($Value == 1) {
                 return(.1);
             };
             if ($Value == .1) {
                 return(.1);
             };
             if ($Value == .2) {
                 return(.2);
             };
             if ($Value == .3) {
                 return(.3);
             };
             if ($Value == .4) {
                 return(.4);
             };
             if ($Value == .5) {
                 return(.9);
             };
             if ($Value == .6) {
                 return(.6);
             };
             if ($Value == .7) {
                 return(.7);
             };
             if ($Value == .8) {
                 return(.4);
             };
             if ($Value == .9) {
                 return(.5);
             };
         }

         if ($Mode == 4) {
             if ($Value == 1) {
                 return(-1);
             };
             if ($Value == .1) {
                 return(.1);
             };
             if ($Value == .2) {
                 return(.2);
             };
             if ($Value == .3) {
                 return(.3);
             };
             if ($Value == .4) {
                 return(.1);
             };
             if ($Value == .5) {
                 return(-.1);
             };
             if ($Value == .6) {
                 return(.8);
             };
             if ($Value == .7) {
                 return(.1);
             };
             if ($Value == .8) {
                 return(.1);
             };
             if ($Value == .9) {
                 return(.1);
             };
         }
     }

     /* Draw a rectangle with rounded corners */
     public function drawRoundedRectangle($X1, $Y1, $X2, $Y2, $Radius, $Format="")
     {
         $R	    = isset($Format["R"]) ? $Format["R"] : 0;
         $G	    = isset($Format["G"]) ? $Format["G"] : 0;
         $B	    = isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;

         list($X1, $Y1, $X2, $Y2) = $this->fixBoxCoordinates($X1, $Y1, $X2, $Y2);

         if ($X2 - $X1 < $Radius) {
             $Radius = floor((($X2-$X1))/2);
         }
         if ($Y2 - $Y1 < $Radius) {
             $Radius = floor((($Y2-$Y1))/2);
         }

         $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"NoBorder"=>true);

         if ($Radius <= 0) {
             $this->drawRectangle($X1, $Y1, $X2, $Y2, $Color);
             return(0);
         }

         if ($this->Antialias) {
             $this->drawLine($X1+$Radius, $Y1, $X2-$Radius, $Y1, $Color);
             $this->drawLine($X2, $Y1+$Radius, $X2, $Y2-$Radius, $Color);
             $this->drawLine($X2-$Radius, $Y2, $X1+$Radius, $Y2, $Color);
             $this->drawLine($X1, $Y1+$Radius, $X1, $Y2-$Radius, $Color);
         } else {
             $Color = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
             imageline($this->Picture, $X1+$Radius, $Y1, $X2-$Radius, $Y1, $Color);
             imageline($this->Picture, $X2, $Y1+$Radius, $X2, $Y2-$Radius, $Color);
             imageline($this->Picture, $X2-$Radius, $Y2, $X1+$Radius, $Y2, $Color);
             imageline($this->Picture, $X1, $Y1+$Radius, $X1, $Y2-$Radius, $Color);
         }

         $Step = 360 / (2 * PI * $Radius);
         for ($i=0;$i<=90;$i=$i+$Step) {
             $X = cos(($i+180)*PI/180) * $Radius + $X1 + $Radius;
             $Y = sin(($i+180)*PI/180) * $Radius + $Y1 + $Radius;
             $this->drawAntialiasPixel($X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));

             $X = cos(($i+90)*PI/180) * $Radius + $X1 + $Radius;
             $Y = sin(($i+90)*PI/180) * $Radius + $Y2 - $Radius;
             $this->drawAntialiasPixel($X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));

             $X = cos($i*PI/180) * $Radius + $X2 - $Radius;
             $Y = sin($i*PI/180) * $Radius + $Y2 - $Radius;
             $this->drawAntialiasPixel($X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));

             $X = cos(($i+270)*PI/180) * $Radius + $X2 - $Radius;
             $Y = sin(($i+270)*PI/180) * $Radius + $Y1 + $Radius;
             $this->drawAntialiasPixel($X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         }
     }

     /* Draw a rectangle with rounded corners */
     public function drawRoundedFilledRectangle($X1, $Y1, $X2, $Y2, $Radius, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 0;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : -1;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : -1;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : -1;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;

         /* Temporary fix for AA issue */
         $Y1 = floor($Y1);
         $Y2 = floor($Y2);
         $X1 = floor($X1);
         $X2 = floor($X2);

         if ($Surrounding != null) {
             $BorderR = $R+$Surrounding;
             $BorderG = $G+$Surrounding;
             $BorderB = $B+$Surrounding;
         }
         if ($BorderR == -1) {
             $BorderR = $R;
             $BorderG = $G;
             $BorderB = $B;
         }

         list($X1, $Y1, $X2, $Y2) = $this->fixBoxCoordinates($X1, $Y1, $X2, $Y2);

         if ($X2 - $X1 < $Radius*2) {
             $Radius = floor((($X2-$X1))/4);
         }
         if ($Y2 - $Y1 < $Radius*2) {
             $Radius = floor((($Y2-$Y1))/4);
         }

         $RestoreShadow = $this->Shadow;
         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $this->Shadow = false;
             $this->drawRoundedFilledRectangle($X1+$this->ShadowX, $Y1+$this->ShadowY, $X2+$this->ShadowX, $Y2+$this->ShadowY, $Radius, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa));
         }

         $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"NoBorder"=>true);

         if ($Radius <= 0) {
             $this->drawFilledRectangle($X1, $Y1, $X2, $Y2, $Color);
             return(0);
         }

         $YTop    = $Y1+$Radius;
         $YBottom = $Y2-$Radius;

         $Step = 360 / (2 * PI * $Radius);
         $Positions = "";
         $Radius--;
         $MinY = "";
         $MaxY = "";
         for ($i=0;$i<=90;$i=$i+$Step) {
             $Xp1 = cos(($i+180)*PI/180) * $Radius + $X1 + $Radius;
             $Xp2 = cos(((90-$i)+270)*PI/180) * $Radius + $X2 - $Radius;
             $Yp  = floor(sin(($i+180)*PI/180) * $Radius + $YTop);
             if ($MinY == "" || $Yp > $MinY) {
                 $MinY = $Yp;
             }

             if ($Xp1 <= floor($X1)) {
                 $Xp1++;
             }
             if ($Xp2 >= floor($X2)) {
                 $Xp2--;
             }
             $Xp1++;

             if (!isset($Positions[$Yp])) {
                 $Positions[$Yp]["X1"] = $Xp1;
                 $Positions[$Yp]["X2"] = $Xp2;
             } else {
                 $Positions[$Yp]["X1"] = ($Positions[$Yp]["X1"]+$Xp1)/2;
                 $Positions[$Yp]["X2"] = ($Positions[$Yp]["X2"]+$Xp2)/2;
             }

             $Xp1 = cos(($i+90)*PI/180) * $Radius + $X1 + $Radius;
             $Xp2 = cos((90-$i)*PI/180) * $Radius + $X2 - $Radius;
             $Yp  = floor(sin(($i+90)*PI/180) * $Radius + $YBottom);
             if ($MaxY == "" || $Yp < $MaxY) {
                 $MaxY = $Yp;
             }

             if ($Xp1 <= floor($X1)) {
                 $Xp1++;
             }
             if ($Xp2 >= floor($X2)) {
                 $Xp2--;
             }
             $Xp1++;

             if (!isset($Positions[$Yp])) {
                 $Positions[$Yp]["X1"] = $Xp1;
                 $Positions[$Yp]["X2"] = $Xp2;
             } else {
                 $Positions[$Yp]["X1"] = ($Positions[$Yp]["X1"]+$Xp1)/2;
                 $Positions[$Yp]["X2"] = ($Positions[$Yp]["X2"]+$Xp2)/2;
             }
         }

         $ManualColor  = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
         foreach ($Positions as $Yp => $Bounds) {
             $X1 = $Bounds["X1"];
             $X1Dec = $this->getFirstDecimal($X1);
             if ($X1Dec != 0) {
                 $X1 = floor($X1)+1;
             }
             $X2 = $Bounds["X2"];
             $X2Dec = $this->getFirstDecimal($X2);
             if ($X2Dec != 0) {
                 $X2 = floor($X2)-1;
             }
             imageline($this->Picture, $X1, $Yp, $X2, $Yp, $ManualColor);
         }
         $this->drawFilledRectangle($X1, $MinY+1, floor($X2), $MaxY-1, $Color);

         $Radius++;
         $this->drawRoundedRectangle($X1, $Y1, $X2+1, $Y2-1, $Radius, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));

         $this->Shadow = $RestoreShadow;
     }

     /* Draw a rectangle with rounded corners */
     public function drawRoundedFilledRectangle_deprecated($X1, $Y1, $X2, $Y2, $Radius, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 0;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : -1;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : -1;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : -1;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;

         if ($Surrounding != null) {
             $BorderR = $R+$Surrounding;
             $BorderG = $G+$Surrounding;
             $BorderB = $B+$Surrounding;
         }
         if ($BorderR == -1) {
             $BorderR = $R;
             $BorderG = $G;
             $BorderB = $B;
         }

         list($X1, $Y1, $X2, $Y2) = $this->fixBoxCoordinates($X1, $Y1, $X2, $Y2);

         if ($X2 - $X1 < $Radius) {
             $Radius = floor((($X2-$X1)+2)/2);
         }
         if ($Y2 - $Y1 < $Radius) {
             $Radius = floor((($Y2-$Y1)+2)/2);
         }

         $RestoreShadow = $this->Shadow;
         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $this->Shadow = false;
             $this->drawRoundedFilledRectangle($X1+$this->ShadowX, $Y1+$this->ShadowY, $X2+$this->ShadowX, $Y2+$this->ShadowY, $Radius, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa));
         }

         if ($this->getFirstDecimal($X2) >= 5) {
             $XOffset2 = 1;
         } else {
             $XOffset2 = 0;
         }
         if ($this->getFirstDecimal($X1) <= 5) {
             $XOffset1 = 1;
         } else {
             $XOffset1 = 0;
         }

         if (!$this->Antialias) {
             $XOffset1 = 1;
             $XOffset2 = 1;
         }

         $YTop    = floor($Y1+$Radius);
         $YBottom = floor($Y2-$Radius);

         $this->drawFilledRectangle($X1-$XOffset1, $YTop, $X2+$XOffset2, $YBottom, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"NoBorder"=>true));

         $Step = 360 / (2 * PI * $Radius);
         $Color  = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
         $Color2 = $this->allocateColor($this->Picture, 255, 0, 0, $Alpha);
         $Drawn = "";

         if ($Alpha < 100) {
             $Drawn[$YTop] = false;
         }
         if ($Alpha < 100) {
             $Drawn[$YBottom] = true;
         }
     
         for ($i=0;$i<=90;$i=$i+$Step) {
             $Xp1 = cos(($i+180)*PI/180) * $Radius + $X1 + $Radius;
             $Xp2 = cos(((90-$i)+270)*PI/180) * $Radius + $X2 - $Radius;
             $Yp  = sin(($i+180)*PI/180) * $Radius + $YTop;

             if ($this->getFirstDecimal($Xp1) > 5) {
                 $XOffset1 = 1;
             } else {
                 $XOffset1 = 0;
             }
             if ($this->getFirstDecimal($Xp2) > 5) {
                 $XOffset2 = 1;
             } else {
                 $XOffset2 = 0;
             }
             if ($this->getFirstDecimal($Yp) > 5) {
                 $YOffset = 1;
             } else {
                 $YOffset = 0;
             }

             if (!isset($Drawn[$Yp+$YOffset]) || $Alpha == 100) {
                 imageline($this->Picture, $Xp1+$XOffset1, $Yp+$YOffset, $Xp2+$XOffset2, $Yp+$YOffset, $Color);
             }

             $Drawn[$Yp+$YOffset] = $Xp2;

             $Xp1 = cos(($i+90)*PI/180) * $Radius + $X1 + $Radius;
             $Xp2 = cos((90-$i)*PI/180) * $Radius + $X2 - $Radius;
             $Yp  = sin(($i+90)*PI/180) * $Radius + $YBottom;

             if ($this->getFirstDecimal($Xp1) > 7) {
                 $XOffset1 = 1;
             } else {
                 $XOffset1 = 0;
             }
             if ($this->getFirstDecimal($Xp2) > 7) {
                 $XOffset2 = 1;
             } else {
                 $XOffset2 = 0;
             }
             if ($this->getFirstDecimal($Yp) > 5) {
                 $YOffset = 1;
             } else {
                 $YOffset = 0;
             }

             if (!isset($Drawn[$Yp+$YOffset]) || $Alpha == 100) {
                 imageline($this->Picture, $Xp1+$XOffset1, $Yp+$YOffset, $Xp2+$XOffset2, $Yp+$YOffset, $Color);
             }

             $Drawn[$Yp+$YOffset] = $Xp2;
         }

         $this->drawRoundedRectangle($X1, $Y1, $X2, $Y2, $Radius, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));

         $this->Shadow = $RestoreShadow;
     }

     /* Draw a rectangle */
     public function drawRectangle($X1, $Y1, $X2, $Y2, $Format="")
     {
         $R		= isset($Format["R"]) ? $Format["R"] : 0;
         $G		= isset($Format["G"]) ? $Format["G"] : 0;
         $B		= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Ticks	= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $NoAngle	= isset($Format["NoAngle"]) ? $Format["NoAngle"] : false;

         if ($X1 > $X2) {
             list($X1, $X2) = array($X2, $X1);
         }
         if ($Y1 > $Y2) {
             list($Y1, $Y2) = array($Y2, $Y1);
         }

         if ($this->Antialias) {
             if ($NoAngle) {
                 $this->drawLine($X1+1, $Y1, $X2-1, $Y1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                 $this->drawLine($X2, $Y1+1, $X2, $Y2-1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                 $this->drawLine($X2-1, $Y2, $X1+1, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                 $this->drawLine($X1, $Y1+1, $X1, $Y2-1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
             } else {
                 $this->drawLine($X1+1, $Y1, $X2-1, $Y1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                 $this->drawLine($X2, $Y1, $X2, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                 $this->drawLine($X2-1, $Y2, $X1+1, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                 $this->drawLine($X1, $Y1, $X1, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
             }
         } else {
             $Color = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
             imagerectangle($this->Picture, $X1, $Y1, $X2, $Y2, $Color);
         }
     }

     /* Draw a filled rectangle */
     public function drawFilledRectangle($X1, $Y1, $X2, $Y2, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 0;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : -1;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : -1;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : -1;
         $BorderAlpha	= isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : $Alpha;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $Ticks		= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $NoAngle		= isset($Format["NoAngle"]) ? $Format["NoAngle"] : null;
         $Dash		= isset($Format["Dash"]) ? $Format["Dash"] : false;
         $DashStep		= isset($Format["DashStep"]) ? $Format["DashStep"] : 4;
         $DashR		= isset($Format["DashR"]) ? $Format["DashR"] : 0;
         $DashG		= isset($Format["DashG"]) ? $Format["DashG"] : 0;
         $DashB		= isset($Format["DashB"]) ? $Format["DashB"] : 0;
         $NoBorder		= isset($Format["NoBorder"]) ? $Format["NoBorder"] : false;

         if ($Surrounding != null) {
             $BorderR = $R+$Surrounding;
             $BorderG = $G+$Surrounding;
             $BorderB = $B+$Surrounding;
         }

         if ($X1 > $X2) {
             list($X1, $X2) = array($X2, $X1);
         }
         if ($Y1 > $Y2) {
             list($Y1, $Y2) = array($Y2, $Y1);
         }

         $RestoreShadow = $this->Shadow;
         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $this->Shadow = false;
             $this->drawFilledRectangle($X1+$this->ShadowX, $Y1+$this->ShadowY, $X2+$this->ShadowX, $Y2+$this->ShadowY, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa,"Ticks"=>$Ticks,"NoAngle"=>$NoAngle));
         }

         $Color = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
         if ($NoAngle) {
             imagefilledrectangle($this->Picture, ceil($X1)+1, ceil($Y1), floor($X2)-1, floor($Y2), $Color);
             imageline($this->Picture, ceil($X1), ceil($Y1)+1, ceil($X1), floor($Y2)-1, $Color);
             imageline($this->Picture, floor($X2), ceil($Y1)+1, floor($X2), floor($Y2)-1, $Color);
         } else {
             imagefilledrectangle($this->Picture, ceil($X1), ceil($Y1), floor($X2), floor($Y2), $Color);
         }

         if ($Dash) {
             if ($BorderR != -1) {
                 $iX1=$X1+1;
                 $iY1=$Y1+1;
                 $iX2=$X2-1;
                 $iY2=$Y2-1;
             } else {
                 $iX1=$X1;
                 $iY1=$Y1;
                 $iX2=$X2;
                 $iY2=$Y2;
             }

             $Color = $this->allocateColor($this->Picture, $DashR, $DashG, $DashB, $Alpha);
             $Y=$iY1-$DashStep;
             for ($X=$iX1; $X<=$iX2+($iY2-$iY1); $X=$X+$DashStep) {
                 $Y=$Y+$DashStep;
                 if ($X > $iX2) {
                     $Xa = $X-($X-$iX2);
                     $Ya = $iY1+($X-$iX2);
                 } else {
                     $Xa = $X;
                     $Ya = $iY1;
                 }
                 if ($Y > $iY2) {
                     $Xb = $iX1+($Y-$iY2);
                     $Yb = $Y-($Y-$iY2);
                 } else {
                     $Xb = $iX1;
                     $Yb = $Y;
                 }
                 imageline($this->Picture, $Xa, $Ya, $Xb, $Yb, $Color);
             }
         }

         if ($this->Antialias && !$NoBorder) {
             if ($X1 < ceil($X1)) {
                 $AlphaA = $Alpha * (ceil($X1) - $X1);
                 $Color = $this->allocateColor($this->Picture, $R, $G, $B, $AlphaA);
                 imageline($this->Picture, ceil($X1)-1, ceil($Y1), ceil($X1)-1, floor($Y2), $Color);
             }

             if ($Y1 < ceil($Y1)) {
                 $AlphaA = $Alpha * (ceil($Y1) - $Y1);
                 $Color = $this->allocateColor($this->Picture, $R, $G, $B, $AlphaA);
                 imageline($this->Picture, ceil($X1), ceil($Y1)-1, floor($X2), ceil($Y1)-1, $Color);
             }

             if ($X2 > floor($X2)) {
                 $AlphaA = $Alpha * (.5-($X2 - floor($X2)));
                 $Color = $this->allocateColor($this->Picture, $R, $G, $B, $AlphaA);
                 imageline($this->Picture, floor($X2)+1, ceil($Y1), floor($X2)+1, floor($Y2), $Color);
             }

             if ($Y2 > floor($Y2)) {
                 $AlphaA = $Alpha * (.5-($Y2 - floor($Y2)));
                 $Color = $this->allocateColor($this->Picture, $R, $G, $B, $AlphaA);
                 imageline($this->Picture, ceil($X1), floor($Y2)+1, floor($X2), floor($Y2)+1, $Color);
             }
         }

         if ($BorderR != -1) {
             $this->drawRectangle($X1, $Y1, $X2, $Y2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$Ticks,"NoAngle"=>$NoAngle));
         }

         $this->Shadow = $RestoreShadow;
     }

     /* Draw a rectangular marker of the specified size */
     public function drawRectangleMarker($X, $Y, $Format="")
     {
         $Size = isset($Format["Size"]) ? $Format["Size"] : 4;

         $HalfSize = floor($Size/2);
         $this->drawFilledRectangle($X-$HalfSize, $Y-$HalfSize, $X+$HalfSize, $Y+$HalfSize, $Format);
     }

     /* Drawn a spline based on the bezier function */
     public function drawSpline($Coordinates, $Format="")
     {
         $R		= isset($Format["R"]) ? $Format["R"] : 0;
         $G		= isset($Format["G"]) ? $Format["G"] : 0;
         $B		= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Force	= isset($Format["Force"]) ? $Format["Force"] : 30;
         $Forces	= isset($Format["Forces"]) ? $Format["Forces"] : null;
         $ShowC	= isset($Format["ShowControl"]) ? $Format["ShowControl"] : false;
         $Ticks	= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $PathOnly	= isset($Format["PathOnly"]) ? $Format["PathOnly"] : false;
         $Weight	= isset($Format["Weight"]) ? $Format["Weight"] : null;

         $Cpt = null;
         $Mode = null;
         $Result = "";
         for ($i=1;$i<=count($Coordinates)-1;$i++) {
             $X1 = $Coordinates[$i-1][0];
             $Y1 = $Coordinates[$i-1][1];
             $X2 = $Coordinates[$i][0];
             $Y2 = $Coordinates[$i][1];

             if ($Forces != null) {
                 $Force = $Forces[$i];
             }

             /* First segment */
             if ($i == 1) {
                 $Xv1 = $X1;
                 $Yv1 = $Y1;
             } else {
                 $Angle1 = $this->getAngle($XLast, $YLast, $X1, $Y1);
                 $Angle2 = $this->getAngle($X1, $Y1, $X2, $Y2);
                 $XOff = cos($Angle2 * PI / 180) * $Force + $X1;
                 $YOff = sin($Angle2 * PI / 180) * $Force + $Y1;

                 $Xv1 = cos($Angle1 * PI / 180) * $Force + $XOff;
                 $Yv1 = sin($Angle1 * PI / 180) * $Force + $YOff;
             }

             /* Last segment */
             if ($i == count($Coordinates)-1) {
                 $Xv2 = $X2;
                 $Yv2 = $Y2;
             } else {
                 $Angle1 = $this->getAngle($X2, $Y2, $Coordinates[$i+1][0], $Coordinates[$i+1][1]);
                 $Angle2 = $this->getAngle($X1, $Y1, $X2, $Y2);
                 $XOff = cos(($Angle2+180) * PI / 180) * $Force + $X2;
                 $YOff = sin(($Angle2+180) * PI / 180) * $Force + $Y2;

                 $Xv2 = cos(($Angle1+180) * PI / 180) * $Force + $XOff;
                 $Yv2 = sin(($Angle1+180) * PI / 180) * $Force + $YOff;
             }

             $Path = $this->drawBezier($X1, $Y1, $X2, $Y2, $Xv1, $Yv1, $Xv2, $Yv2, $Format);
             if ($PathOnly) {
                 $Result[] = $Path;
             }

             $XLast = $X1;
             $YLast = $Y1;
         }

         return($Result);
     }

     /* Draw a bezier curve with two controls points */
     public function drawBezier($X1, $Y1, $X2, $Y2, $Xv1, $Yv1, $Xv2, $Yv2, $Format="")
     {
         $R		= isset($Format["R"]) ? $Format["R"] : 0;
         $G		= isset($Format["G"]) ? $Format["G"] : 0;
         $B		= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $ShowC	= isset($Format["ShowControl"]) ? $Format["ShowControl"] : false;
         $Segments	= isset($Format["Segments"]) ? $Format["Segments"] : null;
         $Ticks	= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $NoDraw    = isset($Format["NoDraw"]) ? $Format["NoDraw"] : false;
         $PathOnly  = isset($Format["PathOnly"]) ? $Format["PathOnly"] : false;
         $Weight    = isset($Format["Weight"]) ? $Format["Weight"] : null;
         $DrawArrow		= isset($Format["DrawArrow"]) ? $Format["DrawArrow"] : false;
         $ArrowSize		= isset($Format["ArrowSize"]) ? $Format["ArrowSize"] : 10;
         $ArrowRatio	= isset($Format["ArrowRatio"]) ? $Format["ArrowRatio"] : .5;
         $ArrowTwoHeads	= isset($Format["ArrowTwoHeads"]) ? $Format["ArrowTwoHeads"] : false;

         if ($Segments == null) {
             $Length    = $this->getLength($X1, $Y1, $X2, $Y2);
             $Precision = ($Length*125)/1000;
         } else {
             $Precision = $Segments;
         }

         $P[0]["X"] = $X1;
         $P[0]["Y"] = $Y1;
         $P[1]["X"] = $Xv1;
         $P[1]["Y"] = $Yv1;
         $P[2]["X"] = $Xv2;
         $P[2]["Y"] = $Yv2;
         $P[3]["X"] = $X2;
         $P[3]["Y"] = $Y2;

         /* Compute the bezier points */
         $Q = "";
         $ID = 0;
         $Path = "";
         for ($i=0;$i<=$Precision;$i=$i+1) {
             $u = $i / $Precision;

             $C    = "";
             $C[0] = (1 - $u) * (1 - $u) * (1 - $u);
             $C[1] = ($u * 3) * (1 - $u) * (1 - $u);
             $C[2] = 3 * $u * $u * (1 - $u);
             $C[3] = $u * $u * $u;

             for ($j=0;$j<=3;$j++) {
                 if (!isset($Q[$ID])) {
                     $Q[$ID] = "";
                 }
                 if (!isset($Q[$ID]["X"])) {
                     $Q[$ID]["X"] = 0;
                 }
                 if (!isset($Q[$ID]["Y"])) {
                     $Q[$ID]["Y"] = 0;
                 }

                 $Q[$ID]["X"] = $Q[$ID]["X"] + $P[$j]["X"] * $C[$j];
                 $Q[$ID]["Y"] = $Q[$ID]["Y"] + $P[$j]["Y"] * $C[$j];
             }
             $ID++;
         }
         $Q[$ID]["X"] = $X2;
         $Q[$ID]["Y"] = $Y2;

         if (!$NoDraw) {
             /* Display the control points */
             if ($ShowC && !$PathOnly) {
                 $Xv1 = floor($Xv1);
                 $Yv1 = floor($Yv1);
                 $Xv2 = floor($Xv2);
                 $Yv2 = floor($Yv2);

                 $this->drawLine($X1, $Y1, $X2, $Y2, array("R"=>0,"G"=>0,"B"=>0,"Alpha"=>30));

                 $MyMarkerSettings = array("R"=>255,"G"=>0,"B"=>0,"BorderR"=>255,"BorderB"=>255,"BorderG"=>255,"Size"=>4);
                 $this->drawRectangleMarker($Xv1, $Yv1, $MyMarkerSettings);
                 $this->drawText($Xv1+4, $Yv1, "v1");
                 $MyMarkerSettings = array("R"=>0,"G"=>0,"B"=>255,"BorderR"=>255,"BorderB"=>255,"BorderG"=>255,"Size"=>4);
                 $this->drawRectangleMarker($Xv2, $Yv2, $MyMarkerSettings);
                 $this->drawText($Xv2+4, $Yv2, "v2");
             }

             /* Draw the bezier */
             $LastX = null;
             $LastY = null;
             $Cpt = null;
             $Mode = null;
             $ArrowS = null;
             foreach ($Q as $Key => $Point) {
                 $X = $Point["X"];
                 $Y = $Point["Y"];

                 /* Get the first segment */
                 if ($ArrowS == null && $LastX != null && $LastY != null) {
                     $ArrowS["X2"] = $LastX;
                     $ArrowS["Y2"] = $LastY;
                     $ArrowS["X1"] = $X;
                     $ArrowS["Y1"] = $Y;
                 }

                 if ($LastX != null && $LastY != null && !$PathOnly) {
                     list($Cpt, $Mode) = $this->drawLine($LastX, $LastY, $X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Cpt"=>$Cpt,"Mode"=>$Mode,"Weight"=>$Weight));
                 }

                 /* Get the last segment */
                 $ArrowE["X1"] = $LastX;
                 $ArrowE["Y1"] = $LastY;
                 $ArrowE["X2"] = $X;
                 $ArrowE["Y2"] = $Y;

                 $LastX = $X;
                 $LastY = $Y;
             }

             if ($DrawArrow && !$PathOnly) {
                 $ArrowSettings = array("FillR"=>$R,"FillG"=>$G,"FillB"=>$B,"Alpha"=>$Alpha,"Size"=>$ArrowSize,"Ratio"=>$ArrowRatio);
                 if ($ArrowTwoHeads) {
                     $this->drawArrow($ArrowS["X1"], $ArrowS["Y1"], $ArrowS["X2"], $ArrowS["Y2"], $ArrowSettings);
                 }

                 $this->drawArrow($ArrowE["X1"], $ArrowE["Y1"], $ArrowE["X2"], $ArrowE["Y2"], $ArrowSettings);
             }
         }
         return($Q);
     }

     /* Draw a line between two points */
     public function drawLine($X1, $Y1, $X2, $Y2, $Format="")
     {
         $R		= isset($Format["R"]) ? $Format["R"] : 0;
         $G		= isset($Format["G"]) ? $Format["G"] : 0;
         $B		= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Ticks	= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $Cpt	= isset($Format["Cpt"]) ? $Format["Cpt"] : 1;
         $Mode	= isset($Format["Mode"]) ? $Format["Mode"] : 1;
         $Weight	= isset($Format["Weight"]) ? $Format["Weight"] : null;
         $Threshold	= isset($Format["Threshold"]) ? $Format["Threshold"] : null;

         if ($this->Antialias == false && $Ticks == null) {
             if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
                 $ShadowColor = $this->allocateColor($this->Picture, $this->ShadowR, $this->ShadowG, $this->ShadowB, $this->Shadowa);
                 imageline($this->Picture, $X1+$this->ShadowX, $Y1+$this->ShadowY, $X2+$this->ShadowX, $Y2+$this->ShadowY, $ShadowColor);
             }

             $Color = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
             imageline($this->Picture, $X1, $Y1, $X2, $Y2, $Color);
             return(0);
         }

         $Distance = sqrt(($X2-$X1)*($X2-$X1)+($Y2-$Y1)*($Y2-$Y1));
         if ($Distance == 0) {
             return(-1);
         }

         /* Derivative algorithm for overweighted lines, re-route to polygons primitives */
         if ($Weight != null) {
             $Angle        = $this->getAngle($X1, $Y1, $X2, $Y2);
             $PolySettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"BorderAlpha"=>$Alpha);

             if ($Ticks == null) {
                 $Points   = "";
                 $Points[] = cos(deg2rad($Angle-90)) * $Weight + $X1;
                 $Points[] = sin(deg2rad($Angle-90)) * $Weight + $Y1;
                 $Points[] = cos(deg2rad($Angle+90)) * $Weight + $X1;
                 $Points[] = sin(deg2rad($Angle+90)) * $Weight + $Y1;
                 $Points[] = cos(deg2rad($Angle+90)) * $Weight + $X2;
                 $Points[] = sin(deg2rad($Angle+90)) * $Weight + $Y2;
                 $Points[] = cos(deg2rad($Angle-90)) * $Weight + $X2;
                 $Points[] = sin(deg2rad($Angle-90)) * $Weight + $Y2;

                 $this->drawPolygon($Points, $PolySettings);
             } else {
                 for ($i=0;$i<=$Distance;$i=$i+$Ticks*2) {
                     $Xa = (($X2-$X1)/$Distance) * $i + $X1;
                     $Ya = (($Y2-$Y1)/$Distance) * $i + $Y1;
                     $Xb = (($X2-$X1)/$Distance) * ($i+$Ticks) + $X1;
                     $Yb = (($Y2-$Y1)/$Distance) * ($i+$Ticks) + $Y1;

                     $Points   = "";
                     $Points[] = cos(deg2rad($Angle-90)) * $Weight + $Xa;
                     $Points[] = sin(deg2rad($Angle-90)) * $Weight + $Ya;
                     $Points[] = cos(deg2rad($Angle+90)) * $Weight + $Xa;
                     $Points[] = sin(deg2rad($Angle+90)) * $Weight + $Ya;
                     $Points[] = cos(deg2rad($Angle+90)) * $Weight + $Xb;
                     $Points[] = sin(deg2rad($Angle+90)) * $Weight + $Yb;
                     $Points[] = cos(deg2rad($Angle-90)) * $Weight + $Xb;
                     $Points[] = sin(deg2rad($Angle-90)) * $Weight 	+ $Yb;

                     $this->drawPolygon($Points, $PolySettings);
                 }
             }

             return(1);
         }

         $XStep = ($X2-$X1) / $Distance;
         $YStep = ($Y2-$Y1) / $Distance;

         for ($i=0;$i<=$Distance;$i++) {
             $X = $i * $XStep + $X1;
             $Y = $i * $YStep + $Y1;

             $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha);

             if ($Threshold != null) {
                 foreach ($Threshold as $Key => $Parameters) {
                     if ($Y <= $Parameters["MinX"] && $Y >= $Parameters["MaxX"]) {
                         if (isset($Parameters["R"])) {
                             $RT = $Parameters["R"];
                         } else {
                             $RT = 0;
                         }
                         if (isset($Parameters["G"])) {
                             $GT = $Parameters["G"];
                         } else {
                             $GT = 0;
                         }
                         if (isset($Parameters["B"])) {
                             $BT = $Parameters["B"];
                         } else {
                             $BT = 0;
                         }
                         if (isset($Parameters["Alpha"])) {
                             $AlphaT = $Parameters["Alpha"];
                         } else {
                             $AlphaT = 0;
                         }
                         $Color = array("R"=>$RT,"G"=>$GT,"B"=>$BT,"Alpha"=>$AlphaT);
                     }
                 }
             }

             if ($Ticks != null) {
                 if ($Cpt % $Ticks == 0) {
                     $Cpt = 0;
                     if ($Mode == 1) {
                         $Mode = 0;
                     } else {
                         $Mode = 1;
                     }
                 }

                 if ($Mode == 1) {
                     $this->drawAntialiasPixel($X, $Y, $Color);
                 }

                 $Cpt++;
             } else {
                 $this->drawAntialiasPixel($X, $Y, $Color);
             }
         }

         return(array($Cpt,$Mode));
     }

     /* Draw a circle */
     public function drawCircle($Xc, $Yc, $Height, $Width, $Format="")
     {
         $R	    = isset($Format["R"]) ? $Format["R"] : 0;
         $G	    = isset($Format["G"]) ? $Format["G"] : 0;
         $B	    = isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Ticks = isset($Format["Ticks"]) ? $Format["Ticks"] : null;

         $Height	= abs($Height);
         $Width	= abs($Width);

         if ($Height == 0) {
             $Height = 1;
         }
         if ($Width == 0) {
             $Width = 1;
         }
         $Xc = floor($Xc);
         $Yc = floor($Yc);

         $RestoreShadow = $this->Shadow;
         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $this->Shadow = false;
             $this->drawCircle($Xc+$this->ShadowX, $Yc+$this->ShadowY, $Height, $Width, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa,"Ticks"=>$Ticks));
         }

         if ($Width == 0) {
             $Width = $Height;
         }
         if ($R < 0) {
             $R = 0;
         }
         if ($R > 255) {
             $R = 255;
         }
         if ($G < 0) {
             $G = 0;
         }
         if ($G > 255) {
             $G = 255;
         }
         if ($B < 0) {
             $B = 0;
         }
         if ($B > 255) {
             $B = 255;
         }

         $Step = 360 / (2 * PI * max($Width, $Height));
         $Mode = 1;
         $Cpt = 1;
         for ($i=0;$i<=360;$i=$i+$Step) {
             $X = cos($i*PI/180) * $Height + $Xc;
             $Y = sin($i*PI/180) * $Width + $Yc;

             if ($Ticks != null) {
                 if ($Cpt % $Ticks == 0) {
                     $Cpt = 0;
                     if ($Mode == 1) {
                         $Mode = 0;
                     } else {
                         $Mode = 1;
                     }
                 }

                 if ($Mode == 1) {
                     $this->drawAntialiasPixel($X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
                 }

                 $Cpt++;
             } else {
                 $this->drawAntialiasPixel($X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
             }
         }
         $this->Shadow = $RestoreShadow;
     }

     /* Draw a filled circle */
     public function drawFilledCircle($X, $Y, $Radius, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 0;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : -1;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : -1;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : -1;
         $BorderAlpha	= isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : $Alpha;
         $Ticks     	= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $Surrounding 	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;

         if ($Radius == 0) {
             $Radius = 1;
         }
         if ($Surrounding != null) {
             $BorderR = $R+$Surrounding;
             $BorderG = $G+$Surrounding;
             $BorderB = $B+$Surrounding;
         }
         $X = floor($X);
         $Y = floor($Y);

         $Radius = abs($Radius);

         $RestoreShadow = $this->Shadow;
         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $this->Shadow = false;
             $this->drawFilledCircle($X+$this->ShadowX, $Y+$this->ShadowY, $Radius, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa,"Ticks"=>$Ticks));
         }

         $this->Mask  = "";
         $Color = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
         for ($i=0; $i<=$Radius*2; $i++) {
             $Slice  = sqrt($Radius * $Radius - ($Radius - $i) * ($Radius - $i));
             $XPos   = floor($Slice);
             $YPos   = $Y + $i - $Radius;
             $AAlias = $Slice - floor($Slice);

             $this->Mask[$X-$XPos][$YPos] = true;
             $this->Mask[$X+$XPos][$YPos] = true;
             imageline($this->Picture, $X-$XPos, $YPos, $X+$XPos, $YPos, $Color);
         }
         if ($this->Antialias) {
             $this->drawCircle($X, $Y, $Radius, $Radius, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
         }

         $this->Mask = "";

         if ($BorderR != -1) {
             $this->drawCircle($X, $Y, $Radius, $Radius, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$Ticks));
         }

         $this->Shadow	= $RestoreShadow;
     }

     /* Write text */
     public function drawText($X, $Y, $Text, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : $this->FontColorR;
         $G			= isset($Format["G"]) ? $Format["G"] : $this->FontColorG;
         $B			= isset($Format["B"]) ? $Format["B"] : $this->FontColorB;
         $Angle		= isset($Format["Angle"]) ? $Format["Angle"] : 0;
         $Align		= isset($Format["Align"]) ? $Format["Align"] : TEXT_ALIGN_BOTTOMLEFT;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : $this->FontColorA;
         $FontName		= isset($Format["FontName"]) ? $Format["FontName"] : $this->FontName;
         $FontSize		= isset($Format["FontSize"]) ? $Format["FontSize"] : $this->FontSize;
         $ShowOrigine	= isset($Format["ShowOrigine"]) ? $Format["ShowOrigine"] : false;
         $TOffset		= isset($Format["TOffset"]) ? $Format["TOffset"] : 2;
         $DrawBox		= isset($Format["DrawBox"]) ? $Format["DrawBox"] : false;
         $DrawBoxBorder	= isset($Format["DrawBoxBorder"]) ? $Format["DrawBoxBorder"] : true;
         $BorderOffset	= isset($Format["BorderOffset"]) ? $Format["BorderOffset"] : 6;
         $BoxRounded	= isset($Format["BoxRounded"]) ? $Format["BoxRounded"] : false;
         $RoundedRadius	= isset($Format["RoundedRadius"]) ? $Format["RoundedRadius"] : 6;
         $BoxR		= isset($Format["BoxR"]) ? $Format["BoxR"] : 255;
         $BoxG		= isset($Format["BoxG"]) ? $Format["BoxG"] : 255;
         $BoxB		= isset($Format["BoxB"]) ? $Format["BoxB"] : 255;
         $BoxAlpha		= isset($Format["BoxAlpha"]) ? $Format["BoxAlpha"] : 50;
         $BoxSurrounding	= isset($Format["BoxSurrounding"]) ? $Format["BoxSurrounding"] : "";
         $BoxBorderR	= isset($Format["BoxR"]) ? $Format["BoxR"] : 0;
         $BoxBorderG	= isset($Format["BoxG"]) ? $Format["BoxG"] : 0;
         $BoxBorderB	= isset($Format["BoxB"]) ? $Format["BoxB"] : 0;
         $BoxBorderAlpha	= isset($Format["BoxAlpha"]) ? $Format["BoxAlpha"] : 50;
         $NoShadow		= isset($Format["NoShadow"]) ? $Format["NoShadow"] : false;

         $Shadow = $this->Shadow;
         if ($NoShadow) {
             $this->Shadow = false;
         }

         if ($BoxSurrounding != "") {
             $BoxBorderR = $BoxR - $BoxSurrounding;
             $BoxBorderG = $BoxG - $BoxSurrounding;
             $BoxBorderB = $BoxB - $BoxSurrounding;
             $BoxBorderAlpha = $BoxAlpha;
         }

         if ($ShowOrigine) {
             $MyMarkerSettings = array("R"=>255,"G"=>0,"B"=>0,"BorderR"=>255,"BorderB"=>255,"BorderG"=>255,"Size"=>4);
             $this->drawRectangleMarker($X, $Y, $MyMarkerSettings);
         }

         $TxtPos = $this->getTextBox($X, $Y, $FontName, $FontSize, $Angle, $Text);

         if ($DrawBox && ($Angle == 0 || $Angle == 90 || $Angle == 180 || $Angle == 270)) {
             $T[0]["X"]=0;
             $T[0]["Y"]=0;
             $T[1]["X"]=0;
             $T[1]["Y"]=0;
             $T[2]["X"]=0;
             $T[2]["Y"]=0;
             $T[3]["X"]=0;
             $T[3]["Y"]=0;
             if ($Angle == 0) {
                 $T[0]["X"]=-$TOffset;
                 $T[0]["Y"]=$TOffset;
                 $T[1]["X"]=$TOffset;
                 $T[1]["Y"]=$TOffset;
                 $T[2]["X"]=$TOffset;
                 $T[2]["Y"]=-$TOffset;
                 $T[3]["X"]=-$TOffset;
                 $T[3]["Y"]=-$TOffset;
             }

             $X1 = min($TxtPos[0]["X"], $TxtPos[1]["X"], $TxtPos[2]["X"], $TxtPos[3]["X"]) - $BorderOffset + 3;
             $Y1 = min($TxtPos[0]["Y"], $TxtPos[1]["Y"], $TxtPos[2]["Y"], $TxtPos[3]["Y"]) - $BorderOffset;
             $X2 = max($TxtPos[0]["X"], $TxtPos[1]["X"], $TxtPos[2]["X"], $TxtPos[3]["X"]) + $BorderOffset + 3;
             $Y2 = max($TxtPos[0]["Y"], $TxtPos[1]["Y"], $TxtPos[2]["Y"], $TxtPos[3]["Y"]) + $BorderOffset - 3;

             $X1 = $X1 - $TxtPos[$Align]["X"] + $X + $T[0]["X"];
             $Y1 = $Y1 - $TxtPos[$Align]["Y"] + $Y + $T[0]["Y"];
             $X2 = $X2 - $TxtPos[$Align]["X"] + $X + $T[0]["X"];
             $Y2 = $Y2 - $TxtPos[$Align]["Y"] + $Y + $T[0]["Y"];

             $Settings = array("R"=>$BoxR,"G"=>$BoxG,"B"=>$BoxB,"Alpha"=>$BoxAlpha,"BorderR"=>$BoxBorderR,"BorderG"=>$BoxBorderG,"BorderB"=>$BoxBorderB,"BorderAlpha"=>$BoxBorderAlpha);

             if ($BoxRounded) {
                 $this->drawRoundedFilledRectangle($X1, $Y1, $X2, $Y2, $RoundedRadius, $Settings);
             } else {
                 $this->drawFilledRectangle($X1, $Y1, $X2, $Y2, $Settings);
             }
         }

         $X = $X - $TxtPos[$Align]["X"] + $X;
         $Y = $Y - $TxtPos[$Align]["Y"] + $Y;

         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $C_ShadowColor = $this->allocateColor($this->Picture, $this->ShadowR, $this->ShadowG, $this->ShadowB, $this->Shadowa);
             imagettftext($this->Picture, $FontSize, $Angle, $X+$this->ShadowX, $Y+$this->ShadowY, $C_ShadowColor, $FontName, $Text);
         }

         $C_TextColor = $this->AllocateColor($this->Picture, $R, $G, $B, $Alpha);
         imagettftext($this->Picture, $FontSize, $Angle, $X, $Y, $C_TextColor, $FontName, $Text);

         $this->Shadow = $Shadow;

         return($TxtPos);
     }

     /* Draw a gradient within a defined area */
     public function drawGradientArea($X1, $Y1, $X2, $Y2, $Direction, $Format="")
     {
         $StartR	= isset($Format["StartR"]) ? $Format["StartR"] : 90;
         $StartG	= isset($Format["StartG"]) ? $Format["StartG"] : 90;
         $StartB	= isset($Format["StartB"]) ? $Format["StartB"] : 90;
         $EndR	= isset($Format["EndR"]) ? $Format["EndR"] : 0;
         $EndG	= isset($Format["EndG"]) ? $Format["EndG"] : 0;
         $EndB	= isset($Format["EndB"]) ? $Format["EndB"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Levels	= isset($Format["Levels"]) ? $Format["Levels"] : null;

         $Shadow = $this->Shadow;
         $this->Shadow = false;

         if ($StartR == $EndR && $StartG == $EndG && $StartB == $EndB) {
             $this->drawFilledRectangle($X1, $Y1, $X2, $Y2, array("R"=>$StartR,"G"=>$StartG,"B"=>$StartB,"Alpha"=>$Alpha));
             return(0);
         }

         if ($Levels != null) {
             $EndR=$StartR+$Levels;
             $EndG=$StartG+$Levels;
             $EndB=$StartB+$Levels;
         }

         if ($X1 > $X2) {
             list($X1, $X2) = array($X2, $X1);
         }
         if ($Y1 > $Y2) {
             list($Y1, $Y2) = array($Y2, $Y1);
         }

         if ($Direction == DIRECTION_VERTICAL) {
             $Width = abs($Y2-$Y1);
         }
         if ($Direction == DIRECTION_HORIZONTAL) {
             $Width = abs($X2-$X1);
         }

         $Step     = max(abs($EndR-$StartR), abs($EndG-$StartG), abs($EndB-$StartB));
         $StepSize = $Width/$Step;
         $RStep    = ($EndR-$StartR)/$Step;
         $GStep    = ($EndG-$StartG)/$Step;
         $BStep    = ($EndB-$StartB)/$Step;

         $R=$StartR;
         $G=$StartG;
         $B=$StartB;
         switch ($Direction) {
       case DIRECTION_VERTICAL:
        $StartY = $Y1; $EndY = floor($Y2)+1; $LastY2 = $StartY;
        for ($i=0;$i<=$Step;$i++) {
            $Y2 = floor($StartY + ($i * $StepSize));

            if ($Y2 > $EndY) {
                $Y2 = $EndY;
            }
            if (($Y1 != $Y2 && $Y1 < $Y2) || $Y2 == $EndY) {
                $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha);
                $this->drawFilledRectangle($X1, $Y1, $X2, $Y2, $Color);
                $LastY2 = max($LastY2, $Y2);
                $Y1 = $Y2+1;
            }
            $R = $R + $RStep;
            $G = $G + $GStep;
            $B = $B + $BStep;
        }
        if ($LastY2 < $EndY && isset($Color)) {
            for ($i=$LastY2+1;$i<=$EndY;$i++) {
                $this->drawLine($X1, $i, $X2, $i, $Color);
            }
        }
        break;

       case DIRECTION_HORIZONTAL:
        $StartX = $X1; $EndX = $X2;
        for ($i=0;$i<=$Step;$i++) {
            $X2 = floor($StartX + ($i * $StepSize));

            if ($X2 > $EndX) {
                $X2 = $EndX;
            }
            if (($X1 != $X2 && $X1 < $X2) || $X2 == $EndX) {
                $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha);
                $this->drawFilledRectangle($X1, $Y1, $X2, $Y2, $Color);
                $X1 = $X2+1;
            }
            $R = $R + $RStep;
            $G = $G + $GStep;
            $B = $B + $BStep;
        }
        if ($X2 < $EndX && isset($Color)) {
            $this->drawFilledRectangle($X2, $Y1, $EndX, $Y2, $Color);
        }
        break;
      }

         $this->Shadow = $Shadow;
     }

     /* Draw an aliased pixel */
     public function drawAntialiasPixel($X, $Y, $Format="")
     {
         $R     = isset($Format["R"]) ? $Format["R"] : 0;
         $G     = isset($Format["G"]) ? $Format["G"] : 0;
         $B     = isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;

         if ($X < 0 || $Y < 0 || $X >= $this->XSize || $Y >= $this->YSize) {
             return(-1);
         }

         if ($R < 0) {
             $R = 0;
         }
         if ($R > 255) {
             $R = 255;
         }
         if ($G < 0) {
             $G = 0;
         }
         if ($G > 255) {
             $G = 255;
         }
         if ($B < 0) {
             $B = 0;
         }
         if ($B > 255) {
             $B = 255;
         }

         if (!$this->Antialias) {
             if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
                 $ShadowColor = $this->allocateColor($this->Picture, $this->ShadowR, $this->ShadowG, $this->ShadowB, $this->Shadowa);
                 imagesetpixel($this->Picture, $X+$this->ShadowX, $Y+$this->ShadowY, $ShadowColor);
             }

             $PlotColor = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
             imagesetpixel($this->Picture, $X, $Y, $PlotColor);

             return(0);
         }

         $Plot = "";
         $Xi   = floor($X);
         $Yi   = floor($Y);

         if ($Xi == $X && $Yi == $Y) {
             if ($Alpha == 100) {
                 $this->drawAlphaPixel($X, $Y, 100, $R, $G, $B);
             } else {
                 $this->drawAlphaPixel($X, $Y, $Alpha, $R, $G, $B);
             }
         } else {
             $Alpha1 = (((1 - ($X - floor($X))) * (1 - ($Y - floor($Y))) * 100) / 100) * $Alpha;
             if ($Alpha1 > $this->AntialiasQuality) {
                 $this->drawAlphaPixel($Xi, $Yi, $Alpha1, $R, $G, $B);
             }

             $Alpha2 = ((($X - floor($X)) * (1 - ($Y - floor($Y))) * 100) / 100) * $Alpha;
             if ($Alpha2 > $this->AntialiasQuality) {
                 $this->drawAlphaPixel($Xi+1, $Yi, $Alpha2, $R, $G, $B);
             }

             $Alpha3 = (((1 - ($X - floor($X))) * ($Y - floor($Y)) * 100) / 100) * $Alpha;
             if ($Alpha3 > $this->AntialiasQuality) {
                 $this->drawAlphaPixel($Xi, $Yi+1, $Alpha3, $R, $G, $B);
             }

             $Alpha4 = ((($X - floor($X)) * ($Y - floor($Y)) * 100) / 100) * $Alpha;
             if ($Alpha4 > $this->AntialiasQuality) {
                 $this->drawAlphaPixel($Xi+1, $Yi+1, $Alpha4, $R, $G, $B);
             }
         }
     }

     /* Draw a semi-transparent pixel */
     public function drawAlphaPixel($X, $Y, $Alpha, $R, $G, $B)
     {
         if (isset($this->Mask[$X])) {
             if (isset($this->Mask[$X][$Y])) {
                 return(0);
             }
         }

         if ($X < 0 || $Y < 0 || $X >= $this->XSize || $Y >= $this->YSize) {
             return(-1);
         }

         if ($R < 0) {
             $R = 0;
         }
         if ($R > 255) {
             $R = 255;
         }
         if ($G < 0) {
             $G = 0;
         }
         if ($G > 255) {
             $G = 255;
         }
         if ($B < 0) {
             $B = 0;
         }
         if ($B > 255) {
             $B = 255;
         }

         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $AlphaFactor = floor(($Alpha / 100) * $this->Shadowa);
             $ShadowColor = $this->allocateColor($this->Picture, $this->ShadowR, $this->ShadowG, $this->ShadowB, $AlphaFactor);
             imagesetpixel($this->Picture, $X+$this->ShadowX, $Y+$this->ShadowY, $ShadowColor);
         }

         $C_Aliased = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
         imagesetpixel($this->Picture, $X, $Y, $C_Aliased);
     }

     /* Convert apha to base 10 */
     public function convertAlpha($AlphaValue)
     {
         return((127/100)*(100-$AlphaValue));
     }

     /* Allocate a color with transparency */
     public function allocateColor($Picture, $R, $G, $B, $Alpha=100)
     {
         if ($R < 0) {
             $R = 0;
         }
         if ($R > 255) {
             $R = 255;
         }
         if ($G < 0) {
             $G = 0;
         }
         if ($G > 255) {
             $G = 255;
         }
         if ($B < 0) {
             $B = 0;
         }
         if ($B > 255) {
             $B = 255;
         }
         if ($Alpha < 0) {
             $Alpha = 0;
         }
         if ($Alpha > 100) {
             $Alpha = 100;
         }

         $Alpha = $this->convertAlpha($Alpha);
         return(imagecolorallocatealpha($Picture, $R, $G, $B, $Alpha));
     }

     /* Load a PNG file and draw it over the chart */
     public function drawFromPNG($X, $Y, $FileName)
     {
         $this->drawFromPicture(1, $FileName, $X, $Y);
     }

     /* Load a GIF file and draw it over the chart */
     public function drawFromGIF($X, $Y, $FileName)
     {
         $this->drawFromPicture(2, $FileName, $X, $Y);
     }

     /* Load a JPEG file and draw it over the chart */
     public function drawFromJPG($X, $Y, $FileName)
     {
         $this->drawFromPicture(3, $FileName, $X, $Y);
     }

     public function getPicInfo($FileName)
     {
         $Infos  = getimagesize($FileName);
         $Width  = $Infos[0];
         $Height = $Infos[1];
         $Type   = $Infos["mime"];

         if ($Type == "image/png") {
             $Type = 1;
         }
         if ($Type == "image/gif") {
             $Type = 2;
         }
         if ($Type == "image/jpeg ") {
             $Type = 3;
         }

         return(array($Width,$Height,$Type));
     }

     /* Generic loader function for external pictures */
     public function drawFromPicture($PicType, $FileName, $X, $Y)
     {
         if (file_exists($FileName)) {
             list($Width, $Height) = $this->getPicInfo($FileName);

             if ($PicType == 1) {
                 $Raster = imagecreatefrompng($FileName);
             } elseif ($PicType == 2) {
                 $Raster = imagecreatefromgif($FileName);
             } elseif ($PicType == 3) {
                 $Raster = imagecreatefromjpeg($FileName);
             } else {
                 return(0);
             }


             $RestoreShadow = $this->Shadow;
             if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
                 $this->Shadow = false;
                 if ($PicType == 3) {
                     $this->drawFilledRectangle($X+$this->ShadowX, $Y+$this->ShadowY, $X+$Width+$this->ShadowX, $Y+$Height+$this->ShadowY, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa));
                 } else {
                     $TranparentID = imagecolortransparent($Raster);
                     for ($Xc=0;$Xc<=$Width-1;$Xc++) {
                         for ($Yc=0;$Yc<=$Height-1;$Yc++) {
                             $RGBa   = imagecolorat($Raster, $Xc, $Yc);
                             $Values = imagecolorsforindex($Raster, $RGBa);
                             if ($Values["alpha"] < 120) {
                                 $AlphaFactor = floor(($this->Shadowa / 100) * ((100 / 127) * (127-$Values["alpha"])));
                                 $this->drawAlphaPixel($X+$Xc+$this->ShadowX, $Y+$Yc+$this->ShadowY, $AlphaFactor, $this->ShadowR, $this->ShadowG, $this->ShadowB);
                             }
                         }
                     }
                 }
             }
             $this->Shadow = $RestoreShadow;

             imagecopy($this->Picture, $Raster, $X, $Y, 0, 0, $Width, $Height);
             imagedestroy($Raster);
         }
     }

     /* Draw an arrow */
     public function drawArrow($X1, $Y1, $X2, $Y2, $Format="")
     {
         $FillR	= isset($Format["FillR"]) ? $Format["FillR"] : 0;
         $FillG	= isset($Format["FillG"]) ? $Format["FillG"] : 0;
         $FillB	= isset($Format["FillB"]) ? $Format["FillB"] : 0;
         $BorderR	= isset($Format["BorderR"]) ? $Format["BorderR"] : $FillR;
         $BorderG	= isset($Format["BorderG"]) ? $Format["BorderG"] : $FillG;
         $BorderB	= isset($Format["BorderB"]) ? $Format["BorderB"] : $FillB;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Size	= isset($Format["Size"]) ? $Format["Size"] : 10;
         $Ratio	= isset($Format["Ratio"]) ? $Format["Ratio"] : .5;
         $TwoHeads	= isset($Format["TwoHeads"]) ? $Format["TwoHeads"] : false;
         $Ticks	= isset($Format["Ticks"]) ? $Format["Ticks"] : false;

         /* Calculate the line angle */
         $Angle = $this->getAngle($X1, $Y1, $X2, $Y2);

         /* Override Shadow support, this will be managed internally */
         $RestoreShadow = $this->Shadow;
         if ($this->Shadow && $this->ShadowX != 0 && $this->ShadowY != 0) {
             $this->Shadow = false;
             $this->drawArrow($X1+$this->ShadowX, $Y1+$this->ShadowY, $X2+$this->ShadowX, $Y2+$this->ShadowY, array("FillR"=>$this->ShadowR,"FillG"=>$this->ShadowG,"FillB"=>$this->ShadowB,"Alpha"=>$this->Shadowa,"Size"=>$Size,"Ratio"=>$Ratio,"TwoHeads"=>$TwoHeads,"Ticks"=>$Ticks));
         }

         /* Draw the 1st Head */
         $TailX = cos(($Angle-180)*PI/180)*$Size+$X2;
         $TailY = sin(($Angle-180)*PI/180)*$Size+$Y2;

         $Points	= "";
         $Points[]  = $X2;
         $Points[]  = $Y2;
         $Points[]	= cos(($Angle-90)*PI/180)*$Size*$Ratio+$TailX;
         $Points[] = sin(($Angle-90)*PI/180)*$Size*$Ratio+$TailY;
         $Points[]	= cos(($Angle-270)*PI/180)*$Size*$Ratio+$TailX;
         $Points[] = sin(($Angle-270)*PI/180)*$Size*$Ratio+$TailY;
         $Points[]  = $X2;
         $Points[]  = $Y2;

         /* Visual correction */
         if ($Angle == 180 || $Angle == 360) {
             $Points[4] = $Points[2];
         }
         if ($Angle == 90 || $Angle == 270) {
             $Points[5] = $Points[3];
         }

         $ArrowColor = $this->allocateColor($this->Picture, $FillR, $FillG, $FillB, $Alpha);
         ImageFilledPolygon($this->Picture, $Points, 4, $ArrowColor);

         $this->drawLine($Points[0], $Points[1], $Points[2], $Points[3], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));
         $this->drawLine($Points[2], $Points[3], $Points[4], $Points[5], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));
         $this->drawLine($Points[0], $Points[1], $Points[4], $Points[5], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));

         /* Draw the second head */
         if ($TwoHeads) {
             $Angle = $this->getAngle($X2, $Y2, $X1, $Y1);

             $TailX2 = cos(($Angle-180)*PI/180)*$Size+$X1;
             $TailY2 = sin(($Angle-180)*PI/180)*$Size+$Y1;

             $Points   = "";
             $Points[] = $X1;
             $Points[]  = $Y1;
             $Points[] = cos(($Angle-90)*PI/180)*$Size*$Ratio+$TailX2;
             $Points[] = sin(($Angle-90)*PI/180)*$Size*$Ratio+$TailY2;
             $Points[] = cos(($Angle-270)*PI/180)*$Size*$Ratio+$TailX2;
             $Points[] = sin(($Angle-270)*PI/180)*$Size*$Ratio+$TailY2;
             $Points[] = $X1;
             $Points[]  = $Y1;

             /* Visual correction */
             if ($Angle == 180 || $Angle == 360) {
                 $Points[4] = $Points[2];
             }
             if ($Angle == 90 || $Angle == 270) {
                 $Points[5] = $Points[3];
             }

             $ArrowColor = $this->allocateColor($this->Picture, $FillR, $FillG, $FillB, $Alpha);
             ImageFilledPolygon($this->Picture, $Points, 4, $ArrowColor);

             $this->drawLine($Points[0], $Points[1], $Points[2], $Points[3], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));
             $this->drawLine($Points[2], $Points[3], $Points[4], $Points[5], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));
             $this->drawLine($Points[0], $Points[1], $Points[4], $Points[5], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));

             $this->drawLine($TailX, $TailY, $TailX2, $TailY2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
         } else {
             $this->drawLine($X1, $Y1, $TailX, $TailY, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
         }

         /* Re-enable shadows */
         $this->Shadow = $RestoreShadow;
     }

     /* Draw a label with associated arrow */
     public function drawArrowLabel($X1, $Y1, $Text, $Format="")
     {
         $FillR    = isset($Format["FillR"]) ? $Format["FillR"] : 0;
         $FillG    = isset($Format["FillG"]) ? $Format["FillG"] : 0;
         $FillB    = isset($Format["FillB"]) ? $Format["FillB"] : 0;
         $BorderR  = isset($Format["BorderR"]) ? $Format["BorderR"] : $FillR;
         $BorderG  = isset($Format["BorderG"]) ? $Format["BorderG"] : $FillG;
         $BorderB  = isset($Format["BorderB"]) ? $Format["BorderB"] : $FillB;
         $FontName = isset($Format["FontName"]) ? $Format["FontName"] : $this->FontName;
         $FontSize = isset($Format["FontSize"]) ? $Format["FontSize"] : $this->FontSize;
         $Alpha    = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Length   = isset($Format["Length"]) ? $Format["Length"] : 50;
         $Angle    = isset($Format["Angle"]) ? $Format["Angle"] : 315;
         $Size     = isset($Format["Size"]) ? $Format["Size"] : 10;
         $Position = isset($Format["Position"]) ? $Format["Position"] : POSITION_TOP;
         $RoundPos = isset($Format["RoundPos"]) ? $Format["RoundPos"] : false;
         $Ticks    = isset($Format["Ticks"]) ? $Format["Ticks"] : null;

         $Angle = $Angle % 360;

         $X2 = sin(($Angle+180)*PI/180)*$Length+$X1;
         $Y2 = cos(($Angle+180)*PI/180)*$Length+$Y1;

         if ($RoundPos && $Angle > 0 && $Angle < 180) {
             $Y2 = ceil($Y2);
         }
         if ($RoundPos && $Angle > 180) {
             $Y2 = floor($Y2);
         }

         $this->drawArrow($X2, $Y2, $X1, $Y1, $Format);

         $Size	= imagettfbbox($FontSize, 0, $FontName, $Text);
         $TxtWidth	= max(abs($Size[2]-$Size[0]), abs($Size[0]-$Size[6]));
         $TxtHeight	= max(abs($Size[1]-$Size[7]), abs($Size[3]-$Size[1]));

         if ($Angle > 0 && $Angle < 180) {
             $this->drawLine($X2, $Y2, $X2-$TxtWidth, $Y2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
             if ($Position == POSITION_TOP) {
                 $this->drawText($X2, $Y2-2, $Text, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Align"=>TEXT_ALIGN_BOTTOMRIGHT));
             } else {
                 $this->drawText($X2, $Y2+4, $Text, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Align"=>TEXT_ALIGN_TOPRIGHT));
             }
         } else {
             $this->drawLine($X2, $Y2, $X2+$TxtWidth, $Y2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
             if ($Position == POSITION_TOP) {
                 $this->drawText($X2, $Y2-2, $Text, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha));
             } else {
                 $this->drawText($X2, $Y2+4, $Text, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$Alpha,"Align"=>TEXT_ALIGN_TOPLEFT));
             }
         }
     }

     /* Draw a progress bar filled with specified % */
     public function drawProgress($X, $Y, $Percent, $Format="")
     {
         if ($Percent > 100) {
             $Percent = 100;
         }
         if ($Percent < 0) {
             $Percent = 0;
         }

         $Width	= isset($Format["Width"]) ? $Format["Width"] : 200;
         $Height	= isset($Format["Height"]) ? $Format["Height"] : 20;
         $Orientation = isset($Format["Orientation"]) ? $Format["Orientation"] : ORIENTATION_HORIZONTAL;
         $ShowLabel = isset($Format["ShowLabel"]) ? $Format["ShowLabel"] : false;
         $LabelPos	= isset($Format["LabelPos"]) ? $Format["LabelPos"] : LABEL_POS_INSIDE;
         $Margin    = isset($Format["Margin"]) ? $Format["Margin"] : 10;
         $R		= isset($Format["R"]) ? $Format["R"] : 130;
         $G		= isset($Format["G"]) ? $Format["G"] : 130;
         $B		= isset($Format["B"]) ? $Format["B"] : 130;
         $RFade	= isset($Format["RFade"]) ? $Format["RFade"] : -1;
         $GFade	= isset($Format["GFade"]) ? $Format["GFade"] : -1;
         $BFade	= isset($Format["BFade"]) ? $Format["BFade"] : -1;
         $BorderR	= isset($Format["BorderR"]) ? $Format["BorderR"] : $R;
         $BorderG	= isset($Format["BorderG"]) ? $Format["BorderG"] : $G;
         $BorderB	= isset($Format["BorderB"]) ? $Format["BorderB"] : $B;
         $BoxBorderR = isset($Format["BoxBorderR"]) ? $Format["BoxBorderR"] : 0;
         $BoxBorderG = isset($Format["BoxBorderG"]) ? $Format["BoxBorderG"] : 0;
         $BoxBorderB = isset($Format["BoxBorderB"]) ? $Format["BoxBorderB"] : 0;
         $BoxBackR	= isset($Format["BoxBackR"]) ? $Format["BoxBackR"] : 255;
         $BoxBackG	= isset($Format["BoxBackG"]) ? $Format["BoxBackG"] : 255;
         $BoxBackB	= isset($Format["BoxBackB"]) ? $Format["BoxBackB"] : 255;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $Surrounding = isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $BoxSurrounding = isset($Format["BoxSurrounding"]) ? $Format["BoxSurrounding"] : null;
         $NoAngle	= isset($Format["NoAngle"]) ? $Format["NoAngle"] : false;

         if ($RFade != -1 && $GFade != -1 && $BFade != -1) {
             $RFade = (($RFade-$R)/100)*$Percent+$R;
             $GFade = (($GFade-$G)/100)*$Percent+$G;
             $BFade = (($BFade-$B)/100)*$Percent+$B;
         }

         if ($Surrounding != null) {
             $BorderR = $R + $Surrounding;
             $BorderG = $G + $Surrounding;
             $BorderB = $B + $Surrounding;
         }
         if ($BoxSurrounding != null) {
             $BoxBorderR = $BoxBackR + $Surrounding;
             $BoxBorderG = $BoxBackG + $Surrounding;
             $BoxBorderB = $BoxBackB + $Surrounding;
         }

         if ($Orientation == ORIENTATION_VERTICAL) {
             $InnerHeight = (($Height-2)/100)*$Percent;
             $this->drawFilledRectangle($X, $Y, $X+$Width, $Y-$Height, array("R"=>$BoxBackR,"G"=>$BoxBackG,"B"=>$BoxBackB,"BorderR"=>$BoxBorderR,"BorderG"=>$BoxBorderG,"BorderB"=>$BoxBorderB,"NoAngle"=>$NoAngle));

             $RestoreShadow = $this->Shadow;
             $this->Shadow  = false;
             if ($RFade != -1 && $GFade != -1 && $BFade != -1) {
                 $GradientOptions = array("StartR"=>$RFade,"StartG"=>$GFade,"StartB"=>$BFade,"EndR"=>$R,"EndG"=>$G,"EndB"=>$B);
                 $this->drawGradientArea($X+1, $Y-1, $X+$Width-1, $Y-$InnerHeight, DIRECTION_VERTICAL, $GradientOptions);

                 if ($Surrounding) {
                     $this->drawRectangle($X+1, $Y-1, $X+$Width-1, $Y-$InnerHeight, array("R"=>255,"G"=>255,"B"=>255,"Alpha"=>$Surrounding));
                 }
             } else {
                 $this->drawFilledRectangle($X+1, $Y-1, $X+$Width-1, $Y-$InnerHeight, array("R"=>$R,"G"=>$G,"B"=>$B,"BorderR"=>$BorderR,"BorderG"=>$BorderG,"BorderB"=>$BorderB));
             }

             $this->Shadow = $RestoreShadow;

             if ($ShowLabel && $LabelPos == LABEL_POS_BOTTOM) {
                 $this->drawText($X+($Width/2), $Y+$Margin, $Percent."%", array("Align"=>TEXT_ALIGN_TOPMIDDLE));
             }
             if ($ShowLabel && $LabelPos == LABEL_POS_TOP) {
                 $this->drawText($X+($Width/2), $Y-$Height-$Margin, $Percent."%", array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
             }
             if ($ShowLabel && $LabelPos == LABEL_POS_INSIDE) {
                 $this->drawText($X+($Width/2), $Y-$InnerHeight-$Margin, $Percent."%", array("Align"=>TEXT_ALIGN_MIDDLELEFT,"Angle"=>90));
             }
             if ($ShowLabel && $LabelPos == LABEL_POS_CENTER) {
                 $this->drawText($X+($Width/2), $Y-($Height/2), $Percent."%", array("Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"Angle"=>90));
             }
         } else {
             if ($Percent == 100) {
                 $InnerWidth = $Width-1;
             } else {
                 $InnerWidth = (($Width-2)/100)*$Percent;
             }

             $this->drawFilledRectangle($X, $Y, $X+$Width, $Y+$Height, array("R"=>$BoxBackR,"G"=>$BoxBackG,"B"=>$BoxBackB,"BorderR"=>$BoxBorderR,"BorderG"=>$BoxBorderG,"BorderB"=>$BoxBorderB,"NoAngle"=>$NoAngle));

             $RestoreShadow = $this->Shadow;
             $this->Shadow  = false;
             if ($RFade != -1 && $GFade != -1 && $BFade != -1) {
                 $GradientOptions = array("StartR"=>$R,"StartG"=>$G,"StartB"=>$B,"EndR"=>$RFade,"EndG"=>$GFade,"EndB"=>$BFade);
                 $this->drawGradientArea($X+1, $Y+1, $X+$InnerWidth, $Y+$Height-1, DIRECTION_HORIZONTAL, $GradientOptions);

                 if ($Surrounding) {
                     $this->drawRectangle($X+1, $Y+1, $X+$InnerWidth, $Y+$Height-1, array("R"=>255,"G"=>255,"B"=>255,"Alpha"=>$Surrounding));
                 }
             } else {
                 $this->drawFilledRectangle($X+1, $Y+1, $X+$InnerWidth, $Y+$Height-1, array("R"=>$R,"G"=>$G,"B"=>$B,"BorderR"=>$BorderR,"BorderG"=>$BorderG,"BorderB"=>$BorderB));
             }
 
             $this->Shadow = $RestoreShadow;

             if ($ShowLabel && $LabelPos == LABEL_POS_LEFT) {
                 $this->drawText($X-$Margin, $Y+($Height/2), $Percent."%", array("Align"=>TEXT_ALIGN_MIDDLERIGHT));
             }
             if ($ShowLabel && $LabelPos == LABEL_POS_RIGHT) {
                 $this->drawText($X+$Width+$Margin, $Y+($Height/2), $Percent."%", array("Align"=>TEXT_ALIGN_MIDDLELEFT));
             }
             if ($ShowLabel && $LabelPos == LABEL_POS_CENTER) {
                 $this->drawText($X+($Width/2), $Y+($Height/2), $Percent."%", array("Align"=>TEXT_ALIGN_MIDDLEMIDDLE));
             }
             if ($ShowLabel && $LabelPos == LABEL_POS_INSIDE) {
                 $this->drawText($X+$InnerWidth+$Margin, $Y+($Height/2), $Percent."%", array("Align"=>TEXT_ALIGN_MIDDLELEFT));
             }
         }
     }

     /* Get the legend box size */
     public function getLegendSize($Format="")
     {
         $FontName		= isset($Format["FontName"]) ? $Format["FontName"] : $this->FontName;
         $FontSize		= isset($Format["FontSize"]) ? $Format["FontSize"] : $this->FontSize;
         $BoxSize		= isset($Format["BoxSize"]) ? $Format["BoxSize"] : 5;
         $Margin		= isset($Format["Margin"]) ? $Format["Margin"] : 5;
         $Style		= isset($Format["Style"]) ? $Format["Style"] : LEGEND_ROUND;
         $Mode		= isset($Format["Mode"]) ? $Format["Mode"] : LEGEND_VERTICAL;
         $BoxWidth		= isset($Format["BoxWidth"]) ? $Format["BoxWidth"] : 5;
         $BoxHeight		= isset($Format["BoxHeight"]) ? $Format["BoxHeight"] : 5;
         $IconAreaWidth	= isset($Format["IconAreaWidth"]) ? $Format["IconAreaWidth"] : $BoxWidth;
         $IconAreaHeight	= isset($Format["IconAreaHeight"]) ? $Format["IconAreaHeight"] : $BoxHeight;
         $XSpacing		= isset($Format["XSpacing"]) ? $Format["XSpacing"] : 5;

         $Data = $this->DataSet->getData();

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"] && isset($Serie["Picture"])) {
                 list($PicWidth, $PicHeight) = $this->getPicInfo($Serie["Picture"]);
                 if ($IconAreaWidth < $PicWidth) {
                     $IconAreaWidth = $PicWidth;
                 }
                 if ($IconAreaHeight < $PicHeight) {
                     $IconAreaHeight = $PicHeight;
                 }
             }
         }

         $YStep = max($this->FontSize, $IconAreaHeight) + 5;
         $XStep = $IconAreaWidth + 5;
         $XStep = $XSpacing;

         $X=100;
         $Y=100;

         $Boundaries = "";
         $Boundaries["L"] = $X;
         $Boundaries["T"] = $Y;
         $Boundaries["R"] = 0;
         $Boundaries["B"] = 0;
         $vY = $Y;
         $vX = $X;
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 if ($Mode == LEGEND_VERTICAL) {
                     $BoxArray = $this->getTextBox($vX+$IconAreaWidth+4, $vY+$IconAreaHeight/2, $FontName, $FontSize, 0, $Serie["Description"]);

                     if ($Boundaries["T"] > $BoxArray[2]["Y"]+$IconAreaHeight/2) {
                         $Boundaries["T"] = $BoxArray[2]["Y"]+$IconAreaHeight/2;
                     }
                     if ($Boundaries["R"] < $BoxArray[1]["X"]+2) {
                         $Boundaries["R"] = $BoxArray[1]["X"]+2;
                     }
                     if ($Boundaries["B"] < $BoxArray[1]["Y"]+2+$IconAreaHeight/2) {
                         $Boundaries["B"] = $BoxArray[1]["Y"]+2+$IconAreaHeight/2;
                     }

                     $Lines = preg_split("/\n/", $Serie["Description"]);
                     $vY = $vY + max($this->FontSize*count($Lines), $IconAreaHeight) + 5;
                 } elseif ($Mode == LEGEND_HORIZONTAL) {
                     $Lines = preg_split("/\n/", $Serie["Description"]);
                     $Width = "";
                     foreach ($Lines as $Key => $Value) {
                         $BoxArray = $this->getTextBox($vX+$IconAreaWidth+6, $Y+$IconAreaHeight/2+(($this->FontSize+3)*$Key), $FontName, $FontSize, 0, $Value);

                         if ($Boundaries["T"] > $BoxArray[2]["Y"]+$IconAreaHeight/2) {
                             $Boundaries["T"] = $BoxArray[2]["Y"]+$IconAreaHeight/2;
                         }
                         if ($Boundaries["R"] < $BoxArray[1]["X"]+2) {
                             $Boundaries["R"] = $BoxArray[1]["X"]+2;
                         }
                         if ($Boundaries["B"] < $BoxArray[1]["Y"]+2+$IconAreaHeight/2) {
                             $Boundaries["B"] = $BoxArray[1]["Y"]+2+$IconAreaHeight/2;
                         }

                         $Width[] = $BoxArray[1]["X"];
                     }

                     $vX=max($Width)+$XStep;
                 }
             }
         }
         $vY=$vY-$YStep;
         $vX=$vX-$XStep;

         $TopOffset  = $Y - $Boundaries["T"];
         if ($Boundaries["B"]-($vY+$IconAreaHeight) < $TopOffset) {
             $Boundaries["B"] = $vY+$IconAreaHeight+$TopOffset;
         }

         $Width  = ($Boundaries["R"]+$Margin) - ($Boundaries["L"]-$Margin);
         $Height = ($Boundaries["B"]+$Margin) - ($Boundaries["T"]-$Margin);

         return(array("Width"=>$Width,"Height"=>$Height));
     }

     /* Draw the legend of the active series */
     public function drawLegend($X, $Y, $Format="")
     {
         $Family	= isset($Format["Family"]) ? $Format["Family"] : LEGEND_FAMILY_BOX;
         $FontName	= isset($Format["FontName"]) ? $Format["FontName"] : $this->FontName;
         $FontSize	= isset($Format["FontSize"]) ? $Format["FontSize"] : $this->FontSize;
         $FontR	= isset($Format["FontR"]) ? $Format["FontR"] : $this->FontColorR;
         $FontG	= isset($Format["FontG"]) ? $Format["FontG"] : $this->FontColorG;
         $FontB	= isset($Format["FontB"]) ? $Format["FontB"] : $this->FontColorB;
         $BoxWidth	= isset($Format["BoxWidth"]) ? $Format["BoxWidth"] : 5;
         $BoxHeight	= isset($Format["BoxHeight"]) ? $Format["BoxHeight"] : 5;
         $IconAreaWidth	= isset($Format["IconAreaWidth"]) ? $Format["IconAreaWidth"] : $BoxWidth;
         $IconAreaHeight	= isset($Format["IconAreaHeight"]) ? $Format["IconAreaHeight"] : $BoxHeight;
         $XSpacing	= isset($Format["XSpacing"]) ? $Format["XSpacing"] : 5;
         $Margin	= isset($Format["Margin"]) ? $Format["Margin"] : 5;
         $R		= isset($Format["R"]) ? $Format["R"] : 200;
         $G		= isset($Format["G"]) ? $Format["G"] : 200;
         $B		= isset($Format["B"]) ? $Format["B"] : 200;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $BorderR	= isset($Format["BorderR"]) ? $Format["BorderR"] : 255;
         $BorderG	= isset($Format["BorderG"]) ? $Format["BorderG"] : 255;
         $BorderB	= isset($Format["BorderB"]) ? $Format["BorderB"] : 255;
         $Surrounding = isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $Style	= isset($Format["Style"]) ? $Format["Style"] : LEGEND_ROUND;
         $Mode	= isset($Format["Mode"]) ? $Format["Mode"] : LEGEND_VERTICAL;

         if ($Surrounding != null) {
             $BorderR = $R + $Surrounding;
             $BorderG = $G + $Surrounding;
             $BorderB = $B + $Surrounding;
         }

         $Data = $this->DataSet->getData();

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"] && isset($Serie["Picture"])) {
                 list($PicWidth, $PicHeight) = $this->getPicInfo($Serie["Picture"]);
                 if ($IconAreaWidth < $PicWidth) {
                     $IconAreaWidth = $PicWidth;
                 }
                 if ($IconAreaHeight < $PicHeight) {
                     $IconAreaHeight = $PicHeight;
                 }
             }
         }

         $YStep = max($this->FontSize, $IconAreaHeight) + 5;
         $XStep = $IconAreaWidth + 5;
         $XStep = $XSpacing;

         $Boundaries = "";
         $Boundaries["L"] = $X;
         $Boundaries["T"] = $Y;
         $Boundaries["R"] = 0;
         $Boundaries["B"] = 0;
         $vY = $Y;
         $vX = $X;
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 if ($Mode == LEGEND_VERTICAL) {
                     $BoxArray = $this->getTextBox($vX+$IconAreaWidth+4, $vY+$IconAreaHeight/2, $FontName, $FontSize, 0, $Serie["Description"]);

                     if ($Boundaries["T"] > $BoxArray[2]["Y"]+$IconAreaHeight/2) {
                         $Boundaries["T"] = $BoxArray[2]["Y"]+$IconAreaHeight/2;
                     }
                     if ($Boundaries["R"] < $BoxArray[1]["X"]+2) {
                         $Boundaries["R"] = $BoxArray[1]["X"]+2;
                     }
                     if ($Boundaries["B"] < $BoxArray[1]["Y"]+2+$IconAreaHeight/2) {
                         $Boundaries["B"] = $BoxArray[1]["Y"]+2+$IconAreaHeight/2;
                     }

                     $Lines = preg_split("/\n/", $Serie["Description"]);
                     $vY = $vY + max($this->FontSize*count($Lines), $IconAreaHeight) + 5;
                 } elseif ($Mode == LEGEND_HORIZONTAL) {
                     $Lines = preg_split("/\n/", $Serie["Description"]);
                     $Width = "";
                     foreach ($Lines as $Key => $Value) {
                         $BoxArray = $this->getTextBox($vX+$IconAreaWidth+6, $Y+$IconAreaHeight/2+(($this->FontSize+3)*$Key), $FontName, $FontSize, 0, $Value);

                         if ($Boundaries["T"] > $BoxArray[2]["Y"]+$IconAreaHeight/2) {
                             $Boundaries["T"] = $BoxArray[2]["Y"]+$IconAreaHeight/2;
                         }
                         if ($Boundaries["R"] < $BoxArray[1]["X"]+2) {
                             $Boundaries["R"] = $BoxArray[1]["X"]+2;
                         }
                         if ($Boundaries["B"] < $BoxArray[1]["Y"]+2+$IconAreaHeight/2) {
                             $Boundaries["B"] = $BoxArray[1]["Y"]+2+$IconAreaHeight/2;
                         }

                         $Width[] = $BoxArray[1]["X"];
                     }

                     $vX=max($Width)+$XStep;
                 }
             }
         }
         $vY=$vY-$YStep;
         $vX=$vX-$XStep;

         $TopOffset  = $Y - $Boundaries["T"];
         if ($Boundaries["B"]-($vY+$IconAreaHeight) < $TopOffset) {
             $Boundaries["B"] = $vY+$IconAreaHeight+$TopOffset;
         }

         if ($Style == LEGEND_ROUND) {
             $this->drawRoundedFilledRectangle($Boundaries["L"]-$Margin, $Boundaries["T"]-$Margin, $Boundaries["R"]+$Margin, $Boundaries["B"]+$Margin, $Margin, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"BorderR"=>$BorderR,"BorderG"=>$BorderG,"BorderB"=>$BorderB));
         } elseif ($Style == LEGEND_BOX) {
             $this->drawFilledRectangle($Boundaries["L"]-$Margin, $Boundaries["T"]-$Margin, $Boundaries["R"]+$Margin, $Boundaries["B"]+$Margin, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"BorderR"=>$BorderR,"BorderG"=>$BorderG,"BorderB"=>$BorderB));
         }

         $RestoreShadow = $this->Shadow;
         $this->Shadow = false;
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Ticks = $Serie["Ticks"];
                 $Weight = $Serie["Weight"];

                 if (isset($Serie["Picture"])) {
                     $Picture = $Serie["Picture"];
                     list($PicWidth, $PicHeight) = $this->getPicInfo($Picture);
                     $PicX = $X+$IconAreaWidth/2;
                     $PicY = $Y+$IconAreaHeight/2;

                     $this->drawFromPNG($PicX-$PicWidth/2, $PicY-$PicHeight/2, $Picture);
                 } else {
                     if ($Family == LEGEND_FAMILY_BOX) {
                         if ($BoxWidth != $IconAreaWidth) {
                             $XOffset = floor(($IconAreaWidth-$BoxWidth)/2);
                         } else {
                             $XOffset = 0;
                         }
                         if ($BoxHeight != $IconAreaHeight) {
                             $YOffset = floor(($IconAreaHeight-$BoxHeight)/2);
                         } else {
                             $YOffset = 0;
                         }

                         $this->drawFilledRectangle($X+1+$XOffset, $Y+1+$YOffset, $X+$BoxWidth+$XOffset+1, $Y+$BoxHeight+1+$YOffset, array("R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));
                         $this->drawFilledRectangle($X+$XOffset, $Y+$YOffset, $X+$BoxWidth+$XOffset, $Y+$BoxHeight+$YOffset, array("R"=>$R,"G"=>$G,"B"=>$B,"Surrounding"=>20));
                     } elseif ($Family == LEGEND_FAMILY_CIRCLE) {
                         $this->drawFilledCircle($X+1+$IconAreaWidth/2, $Y+1+$IconAreaHeight/2, min($IconAreaHeight/2, $IconAreaWidth/2), array("R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));
                         $this->drawFilledCircle($X+$IconAreaWidth/2, $Y+$IconAreaHeight/2, min($IconAreaHeight/2, $IconAreaWidth/2), array("R"=>$R,"G"=>$G,"B"=>$B,"Surrounding"=>20));
                     } elseif ($Family == LEGEND_FAMILY_LINE) {
                         $this->drawLine($X+1, $Y+1+$IconAreaHeight/2, $X+1+$IconAreaWidth, $Y+1+$IconAreaHeight/2, array("R"=>0,"G"=>0,"B"=>0,"Alpha"=>20,"Ticks"=>$Ticks,"Weight"=>$Weight));
                         $this->drawLine($X, $Y+$IconAreaHeight/2, $X+$IconAreaWidth, $Y+$IconAreaHeight/2, array("R"=>$R,"G"=>$G,"B"=>$B,"Ticks"=>$Ticks,"Weight"=>$Weight));
                     }
                 }

                 if ($Mode == LEGEND_VERTICAL) {
                     $Lines = preg_split("/\n/", $Serie["Description"]);
                     foreach ($Lines as $Key => $Value) {
                         $this->drawText($X+$IconAreaWidth+4, $Y+$IconAreaHeight/2+(($this->FontSize+3)*$Key), $Value, array("R"=>$FontR,"G"=>$FontG,"B"=>$FontB,"Align"=>TEXT_ALIGN_MIDDLELEFT,"FontSize"=>$FontSize,"FontName"=>$FontName));
                     }

                     $Y=$Y+max($this->FontSize*count($Lines), $IconAreaHeight) + 5;
                 } elseif ($Mode == LEGEND_HORIZONTAL) {
                     $Lines = preg_split("/\n/", $Serie["Description"]);
                     $Width = "";
                     foreach ($Lines as $Key => $Value) {
                         $BoxArray = $this->drawText($X+$IconAreaWidth+4, $Y+$IconAreaHeight/2+(($this->FontSize+3)*$Key), $Value, array("R"=>$FontR,"G"=>$FontG,"B"=>$FontB,"Align"=>TEXT_ALIGN_MIDDLELEFT,"FontSize"=>$FontSize,"FontName"=>$FontName));
                         $Width[] = $BoxArray[1]["X"];
                     }
                     $X=max($Width)+2+$XStep;
                 }
             }
         }


         $this->Shadow = $RestoreShadow;
     }

     public function drawScale($Format="")
     {
         $Pos		= isset($Format["Pos"]) ? $Format["Pos"] : SCALE_POS_LEFTRIGHT;
         $Floating		= isset($Format["Floating"]) ? $Format["Floating"] : false;
         $Mode		= isset($Format["Mode"]) ? $Format["Mode"] : SCALE_MODE_FLOATING;
         $RemoveXAxis	= isset($Format["RemoveXAxis"]) ? $Format["RemoveXAxis"] : false;
         $MinDivHeight	= isset($Format["MinDivHeight"]) ? $Format["MinDivHeight"] : 20;
         $Factors		= isset($Format["Factors"]) ? $Format["Factors"] : array(1,2,5);
         $ManualScale	= isset($Format["ManualScale"]) ? $Format["ManualScale"] : array("0"=>array("Min"=>-100,"Max"=>100));
         $XMargin		= isset($Format["XMargin"]) ? $Format["XMargin"] : AUTO;
         $YMargin		= isset($Format["YMargin"]) ? $Format["YMargin"] : 0;
         $ScaleSpacing	= isset($Format["ScaleSpacing"]) ? $Format["ScaleSpacing"] : 15;
         $InnerTickWidth	= isset($Format["InnerTickWidth"]) ? $Format["InnerTickWidth"] : 2;
         $OuterTickWidth	= isset($Format["OuterTickWidth"]) ? $Format["OuterTickWidth"] : 2;
         $DrawXLines	= isset($Format["DrawXLines"]) ? $Format["DrawXLines"] : true;
         $DrawYLines	= isset($Format["DrawYLines"]) ? $Format["DrawYLines"] : ALL;
         $GridTicks		= isset($Format["GridTicks"]) ? $Format["GridTicks"] : 4;
         $GridR		= isset($Format["GridR"]) ? $Format["GridR"] : 255;
         $GridG		= isset($Format["GridG"]) ? $Format["GridG"] : 255;
         $GridB		= isset($Format["GridB"]) ? $Format["GridB"] : 255;
         $GridAlpha		= isset($Format["GridAlpha"]) ? $Format["GridAlpha"] : 40;
         $AxisRo		= isset($Format["AxisR"]) ? $Format["AxisR"] : 0;
         $AxisGo		= isset($Format["AxisG"]) ? $Format["AxisG"] : 0;
         $AxisBo		= isset($Format["AxisB"]) ? $Format["AxisB"] : 0;
         $AxisAlpha		= isset($Format["AxisAlpha"]) ? $Format["AxisAlpha"] : 100;
         $TickRo		= isset($Format["TickR"]) ? $Format["TickR"] : 0;
         $TickGo		= isset($Format["TickG"]) ? $Format["TickG"] : 0;
         $TickBo		= isset($Format["TickB"]) ? $Format["TickB"] : 0;
         $TickAlpha		= isset($Format["TickAlpha"]) ? $Format["TickAlpha"] : 100;
         $DrawSubTicks	= isset($Format["DrawSubTicks"]) ? $Format["DrawSubTicks"] : false;
         $InnerSubTickWidth	= isset($Format["InnerSubTickWidth"]) ? $Format["InnerSubTickWidth"] : 0;
         $OuterSubTickWidth	= isset($Format["OuterSubTickWidth"]) ? $Format["OuterSubTickWidth"] : 2;
         $SubTickR		= isset($Format["SubTickR"]) ? $Format["SubTickR"] : 255;
         $SubTickG		= isset($Format["SubTickG"]) ? $Format["SubTickG"] : 0;
         $SubTickB		= isset($Format["SubTickB"]) ? $Format["SubTickB"] : 0;
         $SubTickAlpha	= isset($Format["SubTickAlpha"]) ? $Format["SubTickAlpha"] : 100;
         $AutoAxisLabels	= isset($Format["AutoAxisLabels"]) ? $Format["AutoAxisLabels"] : true;
         $XReleasePercent	= isset($Format["XReleasePercent"]) ? $Format["XReleasePercent"] : 1;
         $DrawArrows	= isset($Format["DrawArrows"]) ? $Format["DrawArrows"] : false;
         $ArrowSize         = isset($Format["ArrowSize"]) ? $Format["ArrowSize"] : 8;
         $CycleBackground	= isset($Format["CycleBackground"]) ? $Format["CycleBackground"] : false;
         $BackgroundR1	= isset($Format["BackgroundR1"]) ? $Format["BackgroundR1"] : 255;
         $BackgroundG1	= isset($Format["BackgroundG1"]) ? $Format["BackgroundG1"] : 255;
         $BackgroundB1	= isset($Format["BackgroundB1"]) ? $Format["BackgroundB1"] : 255;
         $BackgroundAlpha1	= isset($Format["BackgroundAlpha1"]) ? $Format["BackgroundAlpha1"] : 20;
         $BackgroundR2	= isset($Format["BackgroundR2"]) ? $Format["BackgroundR2"] : 230;
         $BackgroundG2	= isset($Format["BackgroundG2"]) ? $Format["BackgroundG2"] : 230;
         $BackgroundB2	= isset($Format["BackgroundB2"]) ? $Format["BackgroundB2"] : 230;
         $BackgroundAlpha2	= isset($Format["BackgroundAlpha2"]) ? $Format["BackgroundAlpha2"] : 20;
         $LabelingMethod	= isset($Format["LabelingMethod"]) ? $Format["LabelingMethod"] : LABELING_ALL;
         $LabelSkip		= isset($Format["LabelSkip"]) ? $Format["LabelSkip"] : 0;
         $LabelRotation	= isset($Format["LabelRotation"]) ? $Format["LabelRotation"] : 0;
         $RemoveSkippedAxis	= isset($Format["RemoveSkippedAxis"]) ? $Format["RemoveSkippedAxis"] : false;
         $SkippedAxisTicks	= isset($Format["SkippedAxisTicks"]) ? $Format["SkippedAxisTicks"] : $GridTicks+2;
         $SkippedAxisR	= isset($Format["SkippedAxisR"]) ? $Format["SkippedAxisR"] : $GridR;
         $SkippedAxisG	= isset($Format["SkippedAxisG"]) ? $Format["SkippedAxisG"] : $GridG;
         $SkippedAxisB	= isset($Format["SkippedAxisB"]) ? $Format["SkippedAxisB"] : $GridB;
         $SkippedAxisAlpha	= isset($Format["SkippedAxisAlpha"]) ? $Format["SkippedAxisAlpha"] : $GridAlpha-30;
         $SkippedTickR	= isset($Format["SkippedTickR"]) ? $Format["SkippedTickR"] : $TickRo;
         $SkippedTickG	= isset($Format["SkippedTickG"]) ? $Format["SkippedTickG"] : $TickGo;
         $SkippedTickB	= isset($Format["SkippedTicksB"]) ? $Format["SkippedTickB"] : $TickBo;
         $SkippedTickAlpha	= isset($Format["SkippedTickAlpha"]) ? $Format["SkippedTickAlpha"] : $TickAlpha-80;
         $SkippedInnerTickWidth	= isset($Format["SkippedInnerTickWidth"]) ? $Format["SkippedInnerTickWidth"] : 0;
         $SkippedOuterTickWidth	= isset($Format["SkippedOuterTickWidth"]) ? $Format["SkippedOuterTickWidth"] : 2;

         /* Floating scale require X & Y margins to be set manually */
         if ($Floating && ($XMargin == AUTO || $YMargin == 0)) {
             $Floating = false;
         }

         /* Skip a NOTICE event in case of an empty array */
         if ($DrawYLines == NONE || $DrawYLines == false) {
             $DrawYLines = array("zarma"=>"31");
         }

         /* Define the color for the skipped elements */
         $SkippedAxisColor = array("R"=>$SkippedAxisR,"G"=>$SkippedAxisG,"B"=>$SkippedAxisB,"Alpha"=>$SkippedAxisAlpha,"Ticks"=>$SkippedAxisTicks);
         $SkippedTickColor = array("R"=>$SkippedTickR,"G"=>$SkippedTickG,"B"=>$SkippedTickB,"Alpha"=>$SkippedTickAlpha);

         $Data = $this->DataSet->getData();
         if (isset($Data["Abscissa"])) {
             $Abscissa = $Data["Abscissa"];
         } else {
             $Abscissa = null;
         }

         /* Unset the abscissa axis, needed if we display multiple charts on the same picture */
         if ($Abscissa != null) {
             foreach ($Data["Axis"] as $AxisID => $Parameters) {
                 if ($Parameters["Identity"] == AXIS_X) {
                     unset($Data["Axis"][$AxisID]);
                 }
             }
         }

         /* Build the scale settings */
         $GotXAxis = false;
         foreach ($Data["Axis"] as $AxisID => $AxisParameter) {
             if ($AxisParameter["Identity"] == AXIS_X) {
                 $GotXAxis = true;
             }

             if ($Pos == SCALE_POS_LEFTRIGHT && $AxisParameter["Identity"] == AXIS_Y) {
                 $Height = $this->GraphAreaY2-$this->GraphAreaY1 - $YMargin*2;
             } elseif ($Pos == SCALE_POS_LEFTRIGHT && $AxisParameter["Identity"] == AXIS_X) {
                 $Height = $this->GraphAreaX2-$this->GraphAreaX1;
             } elseif ($Pos == SCALE_POS_TOPBOTTOM && $AxisParameter["Identity"] == AXIS_Y) {
                 $Height = $this->GraphAreaX2-$this->GraphAreaX1 - $YMargin*2;
                 ;
             } else {
                 $Height = $this->GraphAreaY2-$this->GraphAreaY1;
             }

             $AxisMin = ABSOLUTE_MAX;
             $AxisMax = OUT_OF_SIGHT;
             if ($Mode == SCALE_MODE_FLOATING || $Mode == SCALE_MODE_START0) {
                 foreach ($Data["Series"] as $SerieID => $SerieParameter) {
                     if ($SerieParameter["Axis"] == $AxisID && $Data["Series"][$SerieID]["isDrawable"] && $Data["Abscissa"] != $SerieID) {
                         $AxisMax = max($AxisMax, $Data["Series"][$SerieID]["Max"]);
                         $AxisMin = min($AxisMin, $Data["Series"][$SerieID]["Min"]);
                     }
                 }
                 $AutoMargin = (($AxisMax-$AxisMin)/100)*$XReleasePercent;

                 $Data["Axis"][$AxisID]["Min"] = $AxisMin-$AutoMargin;
                 $Data["Axis"][$AxisID]["Max"] = $AxisMax+$AutoMargin;
                 if ($Mode == SCALE_MODE_START0) {
                     $Data["Axis"][$AxisID]["Min"] = 0;
                 }
             } elseif ($Mode == SCALE_MODE_MANUAL) {
                 if (isset($ManualScale[$AxisID]["Min"]) && isset($ManualScale[$AxisID]["Max"])) {
                     $Data["Axis"][$AxisID]["Min"] = $ManualScale[$AxisID]["Min"];
                     $Data["Axis"][$AxisID]["Max"] = $ManualScale[$AxisID]["Max"];
                 } else {
                     echo "Manual scale boundaries not set.";
                     exit();
                 }
             } elseif ($Mode == SCALE_MODE_ADDALL || $Mode == SCALE_MODE_ADDALL_START0) {
                 $Series = "";
                 foreach ($Data["Series"] as $SerieID => $SerieParameter) {
                     if ($SerieParameter["Axis"] == $AxisID && $SerieParameter["isDrawable"] && $Data["Abscissa"] != $SerieID) {
                         $Series[$SerieID] = count($Data["Series"][$SerieID]["Data"]);
                     }
                 }

                 for ($ID=0;$ID<=max($Series)-1;$ID++) {
                     $PointMin = 0;
                     $PointMax = 0;
                     foreach ($Series as $SerieID => $ValuesCount) {
                         if (isset($Data["Series"][$SerieID]["Data"][$ID]) && $Data["Series"][$SerieID]["Data"][$ID] != null) {
                             $Value = $Data["Series"][$SerieID]["Data"][$ID];
                             if ($Value > 0) {
                                 $PointMax = $PointMax + $Value;
                             } else {
                                 $PointMin = $PointMin + $Value;
                             }
                         }
                     }
                     $AxisMax = max($AxisMax, $PointMax);
                     $AxisMin = min($AxisMin, $PointMin);
                 }
                 $AutoMargin = (($AxisMax-$AxisMin)/100)*$XReleasePercent;
                 $Data["Axis"][$AxisID]["Min"] = $AxisMin-$AutoMargin;
                 $Data["Axis"][$AxisID]["Max"] = $AxisMax+$AutoMargin;
             }
             $MaxDivs = floor($Height/$MinDivHeight);

             if ($Mode == SCALE_MODE_ADDALL_START0) {
                 $Data["Axis"][$AxisID]["Min"] = 0;
             }

             $Scale   = $this->computeScale($Data["Axis"][$AxisID]["Min"], $Data["Axis"][$AxisID]["Max"], $MaxDivs, $Factors, $AxisID);

             $Data["Axis"][$AxisID]["Margin"]    = $AxisParameter["Identity"] == AXIS_X ? $XMargin : $YMargin;
             $Data["Axis"][$AxisID]["ScaleMin"]  = $Scale["XMin"];
             $Data["Axis"][$AxisID]["ScaleMax"]  = $Scale["XMax"];
             $Data["Axis"][$AxisID]["Rows"]      = $Scale["Rows"];
             $Data["Axis"][$AxisID]["RowHeight"] = $Scale["RowHeight"];

             if (isset($Scale["Format"])) {
                 $Data["Axis"][$AxisID]["Format"] = $Scale["Format"];
             }

             if (!isset($Data["Axis"][$AxisID]["Display"])) {
                 $Data["Axis"][$AxisID]["Display"] = null;
             }
             if (!isset($Data["Axis"][$AxisID]["Format"])) {
                 $Data["Axis"][$AxisID]["Format"] = null;
             }
             if (!isset($Data["Axis"][$AxisID]["Unit"])) {
                 $Data["Axis"][$AxisID]["Unit"] = null;
             }
         }

         /* Still no X axis */
         if ($GotXAxis == false) {
             if ($Abscissa != null) {
                 $Points = count($Data["Series"][$Abscissa]["Data"]);
                 if ($AutoAxisLabels) {
                     $AxisName = isset($Data["Series"][$Abscissa]["Description"]) ? $Data["Series"][$Abscissa]["Description"] : null;
                 } else {
                     $AxisName = null;
                 }
             } else {
                 $Points = 0;
                 $AxisName = isset($Data["XAxisName"]) ? $Data["XAxisName"] : null;
                 foreach ($Data["Series"] as $SerieID => $SerieParameter) {
                     if ($SerieParameter["isDrawable"]) {
                         $Points = max($Points, count($SerieParameter["Data"]));
                     }
                 }
             }

             $AxisID = count($Data["Axis"]);
             $Data["Axis"][$AxisID]["Identity"] = AXIS_X;
             if ($Pos == SCALE_POS_LEFTRIGHT) {
                 $Data["Axis"][$AxisID]["Position"] = AXIS_POSITION_BOTTOM;
             } else {
                 $Data["Axis"][$AxisID]["Position"] = AXIS_POSITION_LEFT;
             }
             if (isset($Data["AbscissaName"])) {
                 $Data["Axis"][$AxisID]["Name"] = $Data["AbscissaName"];
             }
             if ($XMargin == AUTO) {
                 if ($Pos == SCALE_POS_LEFTRIGHT) {
                     $Height = $this->GraphAreaX2-$this->GraphAreaX1;
                 } else {
                     $Height = $this->GraphAreaY2-$this->GraphAreaY1;
                 }

                 if ($Points == 1) {
                     $Data["Axis"][$AxisID]["Margin"] = $Height / 2;
                 } else {
                     $Data["Axis"][$AxisID]["Margin"] = ($Height/$Points) / 2;
                 }
             } else {
                 $Data["Axis"][$AxisID]["Margin"] = $XMargin;
             }
             $Data["Axis"][$AxisID]["Rows"] = $Points-1;
             if (!isset($Data["Axis"][$AxisID]["Display"])) {
                 $Data["Axis"][$AxisID]["Display"] = null;
             }
             if (!isset($Data["Axis"][$AxisID]["Format"])) {
                 $Data["Axis"][$AxisID]["Format"] = null;
             }
             if (!isset($Data["Axis"][$AxisID]["Unit"])) {
                 $Data["Axis"][$AxisID]["Unit"] = null;
             }
         }

         /* Do we need to reverse the abscissa position? */
         if ($Pos != SCALE_POS_LEFTRIGHT) {
             if ($Data["AbsicssaPosition"] == AXIS_POSITION_BOTTOM) {
                 $Data["AbsicssaPosition"] = AXIS_POSITION_LEFT;
             } else {
                 $Data["AbsicssaPosition"] = AXIS_POSITION_RIGHT;
             }
         }
         $Data["Axis"][$AxisID]["Position"] = $Data["AbsicssaPosition"];

         $this->DataSet->saveOrientation($Pos);
         $this->DataSet->saveAxisConfig($Data["Axis"]);
         $this->DataSet->saveYMargin($YMargin);

         $FontColorRo = $this->FontColorR;
         $FontColorGo = $this->FontColorG;
         $FontColorBo = $this->FontColorB;

         $AxisPos["L"] = $this->GraphAreaX1;
         $AxisPos["R"] = $this->GraphAreaX2;
         $AxisPos["T"] = $this->GraphAreaY1;
         $AxisPos["B"] = $this->GraphAreaY2;
         foreach ($Data["Axis"] as $AxisID => $Parameters) {
             if (isset($Parameters["Color"])) {
                 $AxisR = $Parameters["Color"]["R"];
                 $AxisG = $Parameters["Color"]["G"];
                 $AxisB = $Parameters["Color"]["B"];
                 $TickR = $Parameters["Color"]["R"];
                 $TickG = $Parameters["Color"]["G"];
                 $TickB = $Parameters["Color"]["B"];
                 $this->setFontProperties(array("R"=>$Parameters["Color"]["R"],"G"=>$Parameters["Color"]["G"],"B"=>$Parameters["Color"]["B"]));
             } else {
                 $AxisR = $AxisRo;
                 $AxisG = $AxisGo;
                 $AxisB = $AxisBo;
                 $TickR = $TickRo;
                 $TickG = $TickGo;
                 $TickB = $TickBo;
                 $this->setFontProperties(array("R"=>$FontColorRo,"G"=>$FontColorGo,"B"=>$FontColorBo));
             }

             $LastValue = "w00t";
             $ID = 1;
             if ($Parameters["Identity"] == AXIS_X) {
                 if ($Pos == SCALE_POS_LEFTRIGHT) {
                     if ($Parameters["Position"] == AXIS_POSITION_BOTTOM) {
                         if ($LabelRotation == 0) {
                             $LabelAlign = TEXT_ALIGN_TOPMIDDLE;
                             $YLabelOffset = 2;
                         }
                         if ($LabelRotation > 0 && $LabelRotation < 190) {
                             $LabelAlign = TEXT_ALIGN_MIDDLERIGHT;
                             $YLabelOffset = 5;
                         }
                         if ($LabelRotation == 180) {
                             $LabelAlign = TEXT_ALIGN_BOTTOMMIDDLE;
                             $YLabelOffset = 5;
                         }
                         if ($LabelRotation > 180 && $LabelRotation < 360) {
                             $LabelAlign = TEXT_ALIGN_MIDDLELEFT;
                             $YLabelOffset = 2;
                         }

                         if (!$RemoveXAxis) {
                             if ($Floating) {
                                 $FloatingOffset = $YMargin;
                                 $this->drawLine($this->GraphAreaX1+$Parameters["Margin"], $AxisPos["B"], $this->GraphAreaX2-$Parameters["Margin"], $AxisPos["B"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             } else {
                                 $FloatingOffset = 0;
                                 $this->drawLine($this->GraphAreaX1, $AxisPos["B"], $this->GraphAreaX2, $AxisPos["B"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             }

                             if ($DrawArrows) {
                                 $this->drawArrow($this->GraphAreaX2-$Parameters["Margin"], $AxisPos["B"], $this->GraphAreaX2+($ArrowSize*2), $AxisPos["B"], array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                             }
                         }

                         $Width = ($this->GraphAreaX2 - $this->GraphAreaX1) - $Parameters["Margin"]*2;

                         if ($Parameters["Rows"] == 0) {
                             $Step  = $Width;
                         } else {
                             $Step  = $Width / ($Parameters["Rows"]);
                         }
             
                         $MaxBottom = $AxisPos["B"];
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $XPos  = $this->GraphAreaX1 + $Parameters["Margin"] + $Step*$i;
                             $YPos  = $AxisPos["B"];

                             if ($Abscissa != null) {
                                 if (isset($Data["Series"][$Abscissa]["Data"][$i])) {
                                     $Value = $this->scaleFormat($Data["Series"][$Abscissa]["Data"][$i], $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = "";
                                 }
                             } else {
                                 if (isset($Parameters["ScaleMin"]) && isset($Parameters["RowHeight"])) {
                                     $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = $i;
                                 }
                             }

                             $ID++;
                             $Skipped = true;
                             if ($this->isValidLabel($Value, $LastValue, $LabelingMethod, $ID, $LabelSkip) && !$RemoveXAxis) {
                                 $Bounds    = $this->drawText($XPos, $YPos+$OuterTickWidth+$YLabelOffset, $Value, array("Angle"=>$LabelRotation,"Align"=>$LabelAlign));
                                 $TxtBottom = $YPos+$OuterTickWidth+2+($Bounds[0]["Y"]-$Bounds[2]["Y"]);
                                 $MaxBottom = max($MaxBottom, $TxtBottom);
                                 $LastValue = $Value;
                                 $Skipped   = false;
                             }

                             if ($RemoveXAxis) {
                                 $Skipped   = false;
                             }

                             if ($Skipped) {
                                 if ($DrawXLines && !$RemoveSkippedAxis) {
                                     $this->drawLine($XPos, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, $SkippedAxisColor);
                                 }
                                 if (($SkippedInnerTickWidth !=0 || $SkippedOuterTickWidth != 0) && !$RemoveXAxis && !$RemoveSkippedAxis) {
                                     $this->drawLine($XPos, $YPos-$SkippedInnerTickWidth, $XPos, $YPos+$SkippedOuterTickWidth, $SkippedTickColor);
                                 }
                             } else {
                                 if ($DrawXLines && ($XPos != $this->GraphAreaX1 && $XPos != $this->GraphAreaX2)) {
                                     $this->drawLine($XPos, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                                 }
                                 if (($InnerTickWidth !=0 || $OuterTickWidth != 0) && !$RemoveXAxis) {
                                     $this->drawLine($XPos, $YPos-$InnerTickWidth, $XPos, $YPos+$OuterTickWidth, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                                 }
                             }
                         }

                         if (isset($Parameters["Name"]) && !$RemoveXAxis) {
                             $YPos   = $MaxBottom+2;
                             $XPos   = $this->GraphAreaX1+($this->GraphAreaX2-$this->GraphAreaX1)/2;
                             $Bounds = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_TOPMIDDLE));
                             $MaxBottom = $Bounds[0]["Y"];

                             $this->DataSet->Data["GraphArea"]["Y2"] = $MaxBottom + $this->FontSize;
                         }

                         $AxisPos["B"] = $MaxBottom + $ScaleSpacing;
                     } elseif ($Parameters["Position"] == AXIS_POSITION_TOP) {
                         if ($LabelRotation == 0) {
                             $LabelAlign = TEXT_ALIGN_BOTTOMMIDDLE;
                             $YLabelOffset = 2;
                         }
                         if ($LabelRotation > 0 && $LabelRotation < 190) {
                             $LabelAlign = TEXT_ALIGN_MIDDLELEFT;
                             $YLabelOffset = 2;
                         }
                         if ($LabelRotation == 180) {
                             $LabelAlign = TEXT_ALIGN_TOPMIDDLE;
                             $YLabelOffset = 5;
                         }
                         if ($LabelRotation > 180 && $LabelRotation < 360) {
                             $LabelAlign = TEXT_ALIGN_MIDDLERIGHT;
                             $YLabelOffset = 5;
                         }

                         if (!$RemoveXAxis) {
                             if ($Floating) {
                                 $FloatingOffset = $YMargin;
                                 $this->drawLine($this->GraphAreaX1+$Parameters["Margin"], $AxisPos["T"], $this->GraphAreaX2-$Parameters["Margin"], $AxisPos["T"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             } else {
                                 $FloatingOffset = 0;
                                 $this->drawLine($this->GraphAreaX1, $AxisPos["T"], $this->GraphAreaX2, $AxisPos["T"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             }

                             if ($DrawArrows) {
                                 $this->drawArrow($this->GraphAreaX2-$Parameters["Margin"], $AxisPos["T"], $this->GraphAreaX2+($ArrowSize*2), $AxisPos["T"], array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                             }
                         }

                         $Width = ($this->GraphAreaX2 - $this->GraphAreaX1) - $Parameters["Margin"]*2;

                         if ($Parameters["Rows"] == 0) {
                             $Step  = $Width;
                         } else {
                             $Step  = $Width / $Parameters["Rows"];
                         }
             
                         $MinTop = $AxisPos["T"];
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $XPos  = $this->GraphAreaX1 + $Parameters["Margin"] + $Step*$i;
                             $YPos  = $AxisPos["T"];

                             if ($Abscissa != null) {
                                 if (isset($Data["Series"][$Abscissa]["Data"][$i])) {
                                     $Value = $this->scaleFormat($Data["Series"][$Abscissa]["Data"][$i], $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = "";
                                 }
                             } else {
                                 if (isset($Parameters["ScaleMin"]) && isset($Parameters["RowHeight"])) {
                                     $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = $i;
                                 }
                             }

                             $ID++;
                             $Skipped = true;
                             if ($this->isValidLabel($Value, $LastValue, $LabelingMethod, $ID, $LabelSkip) && !$RemoveXAxis) {
                                 $Bounds = $this->drawText($XPos, $YPos-$OuterTickWidth-$YLabelOffset, $Value, array("Angle"=>$LabelRotation,"Align"=>$LabelAlign));
                                 $TxtBox = $YPos-$OuterTickWidth-2-($Bounds[0]["Y"]-$Bounds[2]["Y"]);
                                 $MinTop = min($MinTop, $TxtBox);
                                 $LastValue = $Value;
                                 $Skipped   = false;
                             }

                             if ($RemoveXAxis) {
                                 $Skipped   = false;
                             }

                             if ($Skipped) {
                                 if ($DrawXLines && !$RemoveSkippedAxis) {
                                     $this->drawLine($XPos, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, $SkippedAxisColor);
                                 }
                                 if (($SkippedInnerTickWidth !=0 || $SkippedOuterTickWidth != 0) && !$RemoveXAxis && !$RemoveSkippedAxis) {
                                     $this->drawLine($XPos, $YPos+$SkippedInnerTickWidth, $XPos, $YPos-$SkippedOuterTickWidth, $SkippedTickColor);
                                 }
                             } else {
                                 if ($DrawXLines) {
                                     $this->drawLine($XPos, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                                 }
                                 if (($InnerTickWidth !=0 || $OuterTickWidth != 0) && !$RemoveXAxis) {
                                     $this->drawLine($XPos, $YPos+$InnerTickWidth, $XPos, $YPos-$OuterTickWidth, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                                 }
                             }
                         }

                         if (isset($Parameters["Name"]) && !$RemoveXAxis) {
                             $YPos   = $MinTop-2;
                             $XPos   = $this->GraphAreaX1+($this->GraphAreaX2-$this->GraphAreaX1)/2;
                             $Bounds = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                             $MinTop = $Bounds[2]["Y"];

                             $this->DataSet->Data["GraphArea"]["Y1"] = $MinTop;
                         }

                         $AxisPos["T"] = $MinTop - $ScaleSpacing;
                     }
                 } elseif ($Pos == SCALE_POS_TOPBOTTOM) {
                     if ($Parameters["Position"] == AXIS_POSITION_LEFT) {
                         if ($LabelRotation == 0) {
                             $LabelAlign = TEXT_ALIGN_MIDDLERIGHT;
                             $XLabelOffset = -2;
                         }
                         if ($LabelRotation > 0 && $LabelRotation < 190) {
                             $LabelAlign = TEXT_ALIGN_MIDDLERIGHT;
                             $XLabelOffset = -6;
                         }
                         if ($LabelRotation == 180) {
                             $LabelAlign = TEXT_ALIGN_MIDDLELEFT;
                             $XLabelOffset = -2;
                         }
                         if ($LabelRotation > 180 && $LabelRotation < 360) {
                             $LabelAlign = TEXT_ALIGN_MIDDLELEFT;
                             $XLabelOffset = -5;
                         }

                         if (!$RemoveXAxis) {
                             if ($Floating) {
                                 $FloatingOffset = $YMargin;
                                 $this->drawLine($AxisPos["L"], $this->GraphAreaY1+$Parameters["Margin"], $AxisPos["L"], $this->GraphAreaY2-$Parameters["Margin"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             } else {
                                 $FloatingOffset = 0;
                                 $this->drawLine($AxisPos["L"], $this->GraphAreaY1, $AxisPos["L"], $this->GraphAreaY2, array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             }

                             if ($DrawArrows) {
                                 $this->drawArrow($AxisPos["L"], $this->GraphAreaY2-$Parameters["Margin"], $AxisPos["L"], $this->GraphAreaY2+($ArrowSize*2), array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                             }
                         }

                         $Height = ($this->GraphAreaY2 - $this->GraphAreaY1) - $Parameters["Margin"]*2;

                         if ($Parameters["Rows"] == 0) {
                             $Step  = $Height;
                         } else {
                             $Step   = $Height / $Parameters["Rows"];
                         }

                         $MinLeft = $AxisPos["L"];
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $YPos  = $this->GraphAreaY1 + $Parameters["Margin"] + $Step*$i;
                             $XPos  = $AxisPos["L"];

                             if ($Abscissa != null) {
                                 if (isset($Data["Series"][$Abscissa]["Data"][$i])) {
                                     $Value = $this->scaleFormat($Data["Series"][$Abscissa]["Data"][$i], $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = "";
                                 }
                             } else {
                                 if (isset($Parameters["ScaleMin"]) && isset($Parameters["RowHeight"])) {
                                     $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = $i;
                                 }
                             }

                             $ID++;
                             $Skipped = true;
                             if ($this->isValidLabel($Value, $LastValue, $LabelingMethod, $ID, $LabelSkip) && !$RemoveXAxis) {
                                 $Bounds  = $this->drawText($XPos-$OuterTickWidth+$XLabelOffset, $YPos, $Value, array("Angle"=>$LabelRotation,"Align"=>$LabelAlign));
                                 $TxtBox  = $XPos-$OuterTickWidth-2-($Bounds[1]["X"]-$Bounds[0]["X"]);
                                 $MinLeft = min($MinLeft, $TxtBox);
                                 $LastValue = $Value;
                                 $Skipped   = false;
                             }

                             if ($RemoveXAxis) {
                                 $Skipped   = false;
                             }

                             if ($Skipped) {
                                 if ($DrawXLines && !$RemoveSkippedAxis) {
                                     $this->drawLine($this->GraphAreaX1+$FloatingOffset, $YPos, $this->GraphAreaX2-$FloatingOffset, $YPos, $SkippedAxisColor);
                                 }
                                 if (($SkippedInnerTickWidth !=0 || $SkippedOuterTickWidth != 0) && !$RemoveXAxis && !$RemoveSkippedAxis) {
                                     $this->drawLine($XPos-$SkippedOuterTickWidth, $YPos, $XPos+$SkippedInnerTickWidth, $YPos, $SkippedTickColor);
                                 }
                             } else {
                                 if ($DrawXLines && ($YPos != $this->GraphAreaY1 && $YPos != $this->GraphAreaY2)) {
                                     $this->drawLine($this->GraphAreaX1+$FloatingOffset, $YPos, $this->GraphAreaX2-$FloatingOffset, $YPos, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                                 }
                                 if (($InnerTickWidth !=0 || $OuterTickWidth != 0) && !$RemoveXAxis) {
                                     $this->drawLine($XPos-$OuterTickWidth, $YPos, $XPos+$InnerTickWidth, $YPos, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                                 }
                             }
                         }
                         if (isset($Parameters["Name"]) && !$RemoveXAxis) {
                             $XPos   = $MinLeft-2;
                             $YPos   = $this->GraphAreaY1+($this->GraphAreaY2-$this->GraphAreaY1)/2;
                             $Bounds = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE,"Angle"=>90));
                             $MinLeft = $Bounds[0]["X"];

                             $this->DataSet->Data["GraphArea"]["X1"] = $MinLeft;
                         }

                         $AxisPos["L"] = $MinLeft - $ScaleSpacing;
                     } elseif ($Parameters["Position"] == AXIS_POSITION_RIGHT) {
                         if ($LabelRotation == 0) {
                             $LabelAlign = TEXT_ALIGN_MIDDLELEFT;
                             $XLabelOffset = 2;
                         }
                         if ($LabelRotation > 0 && $LabelRotation < 190) {
                             $LabelAlign = TEXT_ALIGN_MIDDLELEFT;
                             $XLabelOffset = 6;
                         }
                         if ($LabelRotation == 180) {
                             $LabelAlign = TEXT_ALIGN_MIDDLERIGHT;
                             $XLabelOffset = 5;
                         }
                         if ($LabelRotation > 180 && $LabelRotation < 360) {
                             $LabelAlign = TEXT_ALIGN_MIDDLERIGHT;
                             $XLabelOffset = 7;
                         }

                         if (!$RemoveXAxis) {
                             if ($Floating) {
                                 $FloatingOffset = $YMargin;
                                 $this->drawLine($AxisPos["R"], $this->GraphAreaY1+$Parameters["Margin"], $AxisPos["R"], $this->GraphAreaY2-$Parameters["Margin"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             } else {
                                 $FloatingOffset = 0;
                                 $this->drawLine($AxisPos["R"], $this->GraphAreaY1, $AxisPos["R"], $this->GraphAreaY2, array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                             }

                             if ($DrawArrows) {
                                 $this->drawArrow($AxisPos["R"], $this->GraphAreaY2-$Parameters["Margin"], $AxisPos["R"], $this->GraphAreaY2+($ArrowSize*2), array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                             }
                         }

                         $Height = ($this->GraphAreaY2 - $this->GraphAreaY1) - $Parameters["Margin"]*2;

                         if ($Parameters["Rows"] == 0) {
                             $Step  = $Height;
                         } else {
                             $Step   = $Height / $Parameters["Rows"];
                         }
             
                         $MaxRight = $AxisPos["R"];
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $YPos  = $this->GraphAreaY1 + $Parameters["Margin"] + $Step*$i;
                             $XPos  = $AxisPos["R"];

                             if ($Abscissa != null) {
                                 if (isset($Data["Series"][$Abscissa]["Data"][$i])) {
                                     $Value = $this->scaleFormat($Data["Series"][$Abscissa]["Data"][$i], $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = "";
                                 }
                             } else {
                                 if (isset($Parameters["ScaleMin"]) && isset($Parameters["RowHeight"])) {
                                     $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Data["XAxisDisplay"], $Data["XAxisFormat"], $Data["XAxisUnit"]);
                                 } else {
                                     $Value = $i;
                                 }
                             }

                             $ID++;
                             $Skipped = true;
                             if ($this->isValidLabel($Value, $LastValue, $LabelingMethod, $ID, $LabelSkip) && !$RemoveXAxis) {
                                 $Bounds   = $this->drawText($XPos+$OuterTickWidth+$XLabelOffset, $YPos, $Value, array("Angle"=>$LabelRotation,"Align"=>$LabelAlign));
                                 $TxtBox   = $XPos+$OuterTickWidth+2+($Bounds[1]["X"]-$Bounds[0]["X"]);
                                 $MaxRight = max($MaxRight, $TxtBox);
                                 $LastValue = $Value;
                                 $Skipped   = false;
                             }

                             if ($RemoveXAxis) {
                                 $Skipped   = false;
                             }

                             if ($Skipped) {
                                 if ($DrawXLines && !$RemoveSkippedAxis) {
                                     $this->drawLine($this->GraphAreaX1+$FloatingOffset, $YPos, $this->GraphAreaX2-$FloatingOffset, $YPos, $SkippedAxisColor);
                                 }
                                 if (($SkippedInnerTickWidth != 0 || $SkippedOuterTickWidth != 0) && !$RemoveXAxis && !$RemoveSkippedAxis) {
                                     $this->drawLine($XPos+$SkippedOuterTickWidth, $YPos, $XPos-$SkippedInnerTickWidth, $YPos, $SkippedTickColor);
                                 }
                             } else {
                                 if ($DrawXLines) {
                                     $this->drawLine($this->GraphAreaX1+$FloatingOffset, $YPos, $this->GraphAreaX2-$FloatingOffset, $YPos, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                                 }
                                 if (($InnerTickWidth != 0 || $OuterTickWidth != 0) && !$RemoveXAxis) {
                                     $this->drawLine($XPos+$OuterTickWidth, $YPos, $XPos-$InnerTickWidth, $YPos, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                                 }
                             }
                         }

                         if (isset($Parameters["Name"]) && !$RemoveXAxis) {
                             $XPos   = $MaxRight+4;
                             $YPos   = $this->GraphAreaY1+($this->GraphAreaY2-$this->GraphAreaY1)/2;
                             $Bounds = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE,"Angle"=>270));
                             $MaxRight = $Bounds[1]["X"];

                             $this->DataSet->Data["GraphArea"]["X2"] = $MaxRight + $this->FontSize;
                         }

                         $AxisPos["R"] = $MaxRight + $ScaleSpacing;
                     }
                 }
             }



             if ($Parameters["Identity"] == AXIS_Y) {
                 if ($Pos == SCALE_POS_LEFTRIGHT) {
                     if ($Parameters["Position"] == AXIS_POSITION_LEFT) {
                         if ($Floating) {
                             $FloatingOffset = $XMargin;
                             $this->drawLine($AxisPos["L"], $this->GraphAreaY1+$Parameters["Margin"], $AxisPos["L"], $this->GraphAreaY2-$Parameters["Margin"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         } else {
                             $FloatingOffset = 0;
                             $this->drawLine($AxisPos["L"], $this->GraphAreaY1, $AxisPos["L"], $this->GraphAreaY2, array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         }

                         if ($DrawArrows) {
                             $this->drawArrow($AxisPos["L"], $this->GraphAreaY1+$Parameters["Margin"], $AxisPos["L"], $this->GraphAreaY1-($ArrowSize*2), array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                         }

                         $Height = ($this->GraphAreaY2 - $this->GraphAreaY1) - $Parameters["Margin"]*2;
                         $Step   = $Height / $Parameters["Rows"];
                         $SubTicksSize = $Step /2;
                         $MinLeft = $AxisPos["L"];
                         $LastY  = null;
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $YPos  = $this->GraphAreaY2 - $Parameters["Margin"] - $Step*$i;
                             $XPos  = $AxisPos["L"];
                             $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Parameters["Display"], $Parameters["Format"], $Parameters["Unit"]);

                             if ($i%2 == 1) {
                                 $BGColor = array("R"=>$BackgroundR1,"G"=>$BackgroundG1,"B"=>$BackgroundB1,"Alpha"=>$BackgroundAlpha1);
                             } else {
                                 $BGColor = array("R"=>$BackgroundR2,"G"=>$BackgroundG2,"B"=>$BackgroundB2,"Alpha"=>$BackgroundAlpha2);
                             }
                             if ($LastY != null && $CycleBackground && ($DrawYLines == ALL || in_array($AxisID, $DrawYLines))) {
                                 $this->drawFilledRectangle($this->GraphAreaX1+$FloatingOffset, $LastY, $this->GraphAreaX2-$FloatingOffset, $YPos, $BGColor);
                             }

                             if ($DrawYLines == ALL || in_array($AxisID, $DrawYLines)) {
                                 $this->drawLine($this->GraphAreaX1+$FloatingOffset, $YPos, $this->GraphAreaX2-$FloatingOffset, $YPos, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                             }

                             if ($DrawSubTicks && $i != $Parameters["Rows"]) {
                                 $this->drawLine($XPos-$OuterSubTickWidth, $YPos-$SubTicksSize, $XPos+$InnerSubTickWidth, $YPos-$SubTicksSize, array("R"=>$SubTickR,"G"=>$SubTickG,"B"=>$SubTickB,"Alpha"=>$SubTickAlpha));
                             }

                             $this->drawLine($XPos-$OuterTickWidth, $YPos, $XPos+$InnerTickWidth, $YPos, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                             $Bounds  = $this->drawText($XPos-$OuterTickWidth-2, $YPos, $Value, array("Align"=>TEXT_ALIGN_MIDDLERIGHT));
                             $TxtLeft = $XPos-$OuterTickWidth-2-($Bounds[1]["X"]-$Bounds[0]["X"]);
                             $MinLeft = min($MinLeft, $TxtLeft);

                             $LastY = $YPos;
                         }

                         if (isset($Parameters["Name"])) {
                             $XPos    = $MinLeft-2;
                             $YPos    = $this->GraphAreaY1+($this->GraphAreaY2-$this->GraphAreaY1)/2;
                             $Bounds  = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE,"Angle"=>90));
                             $MinLeft = $Bounds[2]["X"];

                             $this->DataSet->Data["GraphArea"]["X1"] = $MinLeft;
                         }

                         $AxisPos["L"] = $MinLeft - $ScaleSpacing;
                     } elseif ($Parameters["Position"] == AXIS_POSITION_RIGHT) {
                         if ($Floating) {
                             $FloatingOffset = $XMargin;
                             $this->drawLine($AxisPos["R"], $this->GraphAreaY1+$Parameters["Margin"], $AxisPos["R"], $this->GraphAreaY2-$Parameters["Margin"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         } else {
                             $FloatingOffset = 0;
                             $this->drawLine($AxisPos["R"], $this->GraphAreaY1, $AxisPos["R"], $this->GraphAreaY2, array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         }

                         if ($DrawArrows) {
                             $this->drawArrow($AxisPos["R"], $this->GraphAreaY1+$Parameters["Margin"], $AxisPos["R"], $this->GraphAreaY1-($ArrowSize*2), array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                         }

                         $Height = ($this->GraphAreaY2 - $this->GraphAreaY1) - $Parameters["Margin"]*2;
                         $Step   = $Height / $Parameters["Rows"];
                         $SubTicksSize = $Step /2;
                         $MaxLeft = $AxisPos["R"];
                         $LastY  = null;
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $YPos  = $this->GraphAreaY2 - $Parameters["Margin"] - $Step*$i;
                             $XPos  = $AxisPos["R"];
                             $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Parameters["Display"], $Parameters["Format"], $Parameters["Unit"]);

                             if ($i%2 == 1) {
                                 $BGColor = array("R"=>$BackgroundR1,"G"=>$BackgroundG1,"B"=>$BackgroundB1,"Alpha"=>$BackgroundAlpha1);
                             } else {
                                 $BGColor = array("R"=>$BackgroundR2,"G"=>$BackgroundG2,"B"=>$BackgroundB2,"Alpha"=>$BackgroundAlpha2);
                             }
                             if ($LastY != null && $CycleBackground  && ($DrawYLines == ALL || in_array($AxisID, $DrawYLines))) {
                                 $this->drawFilledRectangle($this->GraphAreaX1+$FloatingOffset, $LastY, $this->GraphAreaX2-$FloatingOffset, $YPos, $BGColor);
                             }

                             if ($DrawYLines == ALL || in_array($AxisID, $DrawYLines)) {
                                 $this->drawLine($this->GraphAreaX1+$FloatingOffset, $YPos, $this->GraphAreaX2-$FloatingOffset, $YPos, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                             }

                             if ($DrawSubTicks && $i != $Parameters["Rows"]) {
                                 $this->drawLine($XPos-$OuterSubTickWidth, $YPos-$SubTicksSize, $XPos+$InnerSubTickWidth, $YPos-$SubTicksSize, array("R"=>$SubTickR,"G"=>$SubTickG,"B"=>$SubTickB,"Alpha"=>$SubTickAlpha));
                             }

                             $this->drawLine($XPos-$InnerTickWidth, $YPos, $XPos+$OuterTickWidth, $YPos, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                             $Bounds  = $this->drawText($XPos+$OuterTickWidth+2, $YPos, $Value, array("Align"=>TEXT_ALIGN_MIDDLELEFT));
                             $TxtLeft = $XPos+$OuterTickWidth+2+($Bounds[1]["X"]-$Bounds[0]["X"]);
                             $MaxLeft = max($MaxLeft, $TxtLeft);

                             $LastY = $YPos;
                         }

                         if (isset($Parameters["Name"])) {
                             $XPos    = $MaxLeft+6;
                             $YPos    = $this->GraphAreaY1+($this->GraphAreaY2-$this->GraphAreaY1)/2;
                             $Bounds  = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE,"Angle"=>270));
                             $MaxLeft = $Bounds[2]["X"];

                             $this->DataSet->Data["GraphArea"]["X2"] = $MaxLeft + $this->FontSize;
                         }
                         $AxisPos["R"] = $MaxLeft + $ScaleSpacing;
                     }
                 } elseif ($Pos == SCALE_POS_TOPBOTTOM) {
                     if ($Parameters["Position"] == AXIS_POSITION_TOP) {
                         if ($Floating) {
                             $FloatingOffset = $XMargin;
                             $this->drawLine($this->GraphAreaX1+$Parameters["Margin"], $AxisPos["T"], $this->GraphAreaX2-$Parameters["Margin"], $AxisPos["T"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         } else {
                             $FloatingOffset = 0;
                             $this->drawLine($this->GraphAreaX1, $AxisPos["T"], $this->GraphAreaX2, $AxisPos["T"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         }

                         if ($DrawArrows) {
                             $this->drawArrow($this->GraphAreaX2-$Parameters["Margin"], $AxisPos["T"], $this->GraphAreaX2+($ArrowSize*2), $AxisPos["T"], array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                         }

                         $Width = ($this->GraphAreaX2 - $this->GraphAreaX1) - $Parameters["Margin"]*2;
                         $Step   = $Width / $Parameters["Rows"];
                         $SubTicksSize = $Step /2;
                         $MinTop = $AxisPos["T"];
                         $LastX  = null;
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $XPos  = $this->GraphAreaX1 + $Parameters["Margin"] + $Step*$i;
                             $YPos  = $AxisPos["T"];
                             $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Parameters["Display"], $Parameters["Format"], $Parameters["Unit"]);

                             if ($i%2 == 1) {
                                 $BGColor = array("R"=>$BackgroundR1,"G"=>$BackgroundG1,"B"=>$BackgroundB1,"Alpha"=>$BackgroundAlpha1);
                             } else {
                                 $BGColor = array("R"=>$BackgroundR2,"G"=>$BackgroundG2,"B"=>$BackgroundB2,"Alpha"=>$BackgroundAlpha2);
                             }
                             if ($LastX != null && $CycleBackground  && ($DrawYLines == ALL || in_array($AxisID, $DrawYLines))) {
                                 $this->drawFilledRectangle($LastX, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, $BGColor);
                             }

                             if ($DrawYLines == ALL || in_array($AxisID, $DrawYLines)) {
                                 $this->drawLine($XPos, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                             }

                             if ($DrawSubTicks && $i != $Parameters["Rows"]) {
                                 $this->drawLine($XPos+$SubTicksSize, $YPos-$OuterSubTickWidth, $XPos+$SubTicksSize, $YPos+$InnerSubTickWidth, array("R"=>$SubTickR,"G"=>$SubTickG,"B"=>$SubTickB,"Alpha"=>$SubTickAlpha));
                             }

                             $this->drawLine($XPos, $YPos-$OuterTickWidth, $XPos, $YPos+$InnerTickWidth, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                             $Bounds    = $this->drawText($XPos, $YPos-$OuterTickWidth-2, $Value, array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                             $TxtHeight = $YPos-$OuterTickWidth-2-($Bounds[1]["Y"]-$Bounds[2]["Y"]);
                             $MinTop    = min($MinTop, $TxtHeight);

                             $LastX = $XPos;
                         }

                         if (isset($Parameters["Name"])) {
                             $YPos   = $MinTop-2;
                             $XPos   = $this->GraphAreaX1+($this->GraphAreaX2-$this->GraphAreaX1)/2;
                             $Bounds = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                             $MinTop = $Bounds[2]["Y"];

                             $this->DataSet->Data["GraphArea"]["Y1"] = $MinTop;
                         }

                         $AxisPos["T"] = $MinTop - $ScaleSpacing;
                     } elseif ($Parameters["Position"] == AXIS_POSITION_BOTTOM) {
                         if ($Floating) {
                             $FloatingOffset = $XMargin;
                             $this->drawLine($this->GraphAreaX1+$Parameters["Margin"], $AxisPos["B"], $this->GraphAreaX2-$Parameters["Margin"], $AxisPos["B"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         } else {
                             $FloatingOffset = 0;
                             $this->drawLine($this->GraphAreaX1, $AxisPos["B"], $this->GraphAreaX2, $AxisPos["B"], array("R"=>$AxisR,"G"=>$AxisG,"B"=>$AxisB,"Alpha"=>$AxisAlpha));
                         }

                         if ($DrawArrows) {
                             $this->drawArrow($this->GraphAreaX2-$Parameters["Margin"], $AxisPos["B"], $this->GraphAreaX2+($ArrowSize*2), $AxisPos["B"], array("FillR"=>$AxisR,"FillG"=>$AxisG,"FillB"=>$AxisB,"Size"=>$ArrowSize));
                         }

                         $Width = ($this->GraphAreaX2 - $this->GraphAreaX1) - $Parameters["Margin"]*2;
                         $Step   = $Width / $Parameters["Rows"];
                         $SubTicksSize = $Step /2;
                         $MaxBottom = $AxisPos["B"];
                         $LastX  = null;
                         for ($i=0;$i<=$Parameters["Rows"];$i++) {
                             $XPos  = $this->GraphAreaX1 + $Parameters["Margin"] + $Step*$i;
                             $YPos  = $AxisPos["B"];
                             $Value = $this->scaleFormat($Parameters["ScaleMin"] + $Parameters["RowHeight"]*$i, $Parameters["Display"], $Parameters["Format"], $Parameters["Unit"]);

                             if ($i%2 == 1) {
                                 $BGColor = array("R"=>$BackgroundR1,"G"=>$BackgroundG1,"B"=>$BackgroundB1,"Alpha"=>$BackgroundAlpha1);
                             } else {
                                 $BGColor = array("R"=>$BackgroundR2,"G"=>$BackgroundG2,"B"=>$BackgroundB2,"Alpha"=>$BackgroundAlpha2);
                             }
                             if ($LastX != null && $CycleBackground  && ($DrawYLines == ALL || in_array($AxisID, $DrawYLines))) {
                                 $this->drawFilledRectangle($LastX, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, $BGColor);
                             }

                             if ($DrawYLines == ALL || in_array($AxisID, $DrawYLines)) {
                                 $this->drawLine($XPos, $this->GraphAreaY1+$FloatingOffset, $XPos, $this->GraphAreaY2-$FloatingOffset, array("R"=>$GridR,"G"=>$GridG,"B"=>$GridB,"Alpha"=>$GridAlpha,"Ticks"=>$GridTicks));
                             }

                             if ($DrawSubTicks && $i != $Parameters["Rows"]) {
                                 $this->drawLine($XPos+$SubTicksSize, $YPos-$OuterSubTickWidth, $XPos+$SubTicksSize, $YPos+$InnerSubTickWidth, array("R"=>$SubTickR,"G"=>$SubTickG,"B"=>$SubTickB,"Alpha"=>$SubTickAlpha));
                             }

                             $this->drawLine($XPos, $YPos-$OuterTickWidth, $XPos, $YPos+$InnerTickWidth, array("R"=>$TickR,"G"=>$TickG,"B"=>$TickB,"Alpha"=>$TickAlpha));
                             $Bounds    = $this->drawText($XPos, $YPos+$OuterTickWidth+2, $Value, array("Align"=>TEXT_ALIGN_TOPMIDDLE));
                             $TxtHeight = $YPos+$OuterTickWidth+2+($Bounds[1]["Y"]-$Bounds[2]["Y"]);
                             $MaxBottom = max($MaxBottom, $TxtHeight);

                             $LastX = $XPos;
                         }

                         if (isset($Parameters["Name"])) {
                             $YPos   = $MaxBottom+2;
                             $XPos   = $this->GraphAreaX1+($this->GraphAreaX2-$this->GraphAreaX1)/2;
                             $Bounds = $this->drawText($XPos, $YPos, $Parameters["Name"], array("Align"=>TEXT_ALIGN_TOPMIDDLE));
                             $MaxBottom = $Bounds[0]["Y"];

                             $this->DataSet->Data["GraphArea"]["Y2"] = $MaxBottom + $this->FontSize;
                         }

                         $AxisPos["B"] = $MaxBottom + $ScaleSpacing;
                     }
                 }
             }
         }
     }

     public function isValidLabel($Value, $LastValue, $LabelingMethod, $ID, $LabelSkip)
     {
         if ($LabelingMethod == LABELING_DIFFERENT && $Value != $LastValue) {
             return(true);
         }
         if ($LabelingMethod == LABELING_DIFFERENT && $Value == $LastValue) {
             return(false);
         }
         if ($LabelingMethod == LABELING_ALL && $LabelSkip == 0) {
             return(true);
         }
         if ($LabelingMethod == LABELING_ALL && ($ID+$LabelSkip) % ($LabelSkip+1) != 1) {
             return(false);
         }

         return(true);
     }

     /* Compute the scale, check for the best visual factors */
     public function computeScale($XMin, $XMax, $MaxDivs, $Factors, $AxisID=0)
     {
         /* Compute each factors */
         $Results = "";
         foreach ($Factors as $Key => $Factor) {
             $Results[$Factor] = $this->processScale($XMin, $XMax, $MaxDivs, array($Factor), $AxisID);
         }

         /* Remove scales that are creating to much decimals */
         $GoodScaleFactors = "";
         foreach ($Results as $Key => $Result) {
             $Decimals = preg_split("/\./", $Result["RowHeight"]);
             if ((!isset($Decimals[1])) || (strlen($Decimals[1]) < 6)) {
                 $GoodScaleFactors[] = $Key;
             }
         }

         /* Found no correct scale, shame,... returns the 1st one as default */
         if ($GoodScaleFactors == "") {
             return($Results[$Factors[0]]);
         }

         /* Find the factor that cause the maximum number of Rows */
         $MaxRows = 0;
         $BestFactor = 0;
         foreach ($GoodScaleFactors as $Key => $Factor) {
             if ($Results[$Factor]["Rows"] > $MaxRows) {
                 $MaxRows = $Results[$Factor]["Rows"];
                 $BestFactor = $Factor;
             }
         }

         /* Return the best visual scale */
         return($Results[$BestFactor]);
     }

     /* Compute the best matching scale based on size & factors */
     public function processScale($XMin, $XMax, $MaxDivs, $Factors, $AxisID)
     {
         $ScaleHeight = abs(ceil($XMax)-floor($XMin));

         if (isset($this->DataSet->Data["Axis"][$AxisID]["Format"])) {
             $Format = $this->DataSet->Data["Axis"][$AxisID]["Format"];
         } else {
             $Format = null;
         }

         if (isset($this->DataSet->Data["Axis"][$AxisID]["Display"])) {
             $Mode = $this->DataSet->Data["Axis"][$AxisID]["Display"];
         } else {
             $Mode = AXIS_FORMAT_DEFAULT;
         }

         $Scale = "";
         if ($XMin != $XMax) {
             $Found = false;
             $Rescaled = false;
             $Scaled10Factor = .0001;
             $Result = 0;
             while (!$Found) {
                 foreach ($Factors as $Key => $Factor) {
                     if (!$Found) {
                         if (!($this->modulo($XMin, $Factor*$Scaled10Factor) == 0) || ($XMin != floor($XMin))) {
                             $XMinRescaled = floor($XMin/($Factor*$Scaled10Factor))*$Factor*$Scaled10Factor;
                         } else {
                             $XMinRescaled = $XMin;
                         }
                         if (!($this->modulo($XMax, $Factor*$Scaled10Factor) == 0) || ($XMax != floor($XMax))) {
                             $XMaxRescaled = floor($XMax/($Factor*$Scaled10Factor))*$Factor*$Scaled10Factor+($Factor*$Scaled10Factor);
                         } else {
                             $XMaxRescaled = $XMax;
                         }
                         $ScaleHeightRescaled = abs($XMaxRescaled-$XMinRescaled);

                         if (!$Found && floor($ScaleHeightRescaled/($Factor*$Scaled10Factor)) <= $MaxDivs) {
                             $Found = true;
                             $Rescaled = true;
                             $Result = $Factor * $Scaled10Factor;
                         }
                     }
                 }
                 $Scaled10Factor = $Scaled10Factor * 10;
             }

             /* ReCall Min / Max / Height */
             if ($Rescaled) {
                 $XMin = $XMinRescaled;
                 $XMax = $XMaxRescaled;
                 $ScaleHeight = $ScaleHeightRescaled;
             }

             /* Compute rows size */
             $Rows      = floor($ScaleHeight / $Result);
             if ($Rows == 0) {
                 $Rows = 1;
             }
             $RowHeight = $ScaleHeight / $Rows;

             /* Return the results */
             $Scale["Rows"] = $Rows;
             $Scale["RowHeight"] = $RowHeight;
             $Scale["XMin"] = $XMin;
             $Scale["XMax"] = $XMax;

             /* Compute the needed decimals for the metric view to avoid repetition of the same X Axis labels */
             if ($Mode == AXIS_FORMAT_METRIC && $Format == null) {
                 $Done = false;
                 $GoodDecimals = 0;
                 for ($Decimals=0;$Decimals<=10;$Decimals++) {
                     if (!$Done) {
                         $LastLabel = "zob";
                         $ScaleOK = true;
                         for ($i=0;$i<=$Rows;$i++) {
                             $Value = $XMin + $i*$RowHeight;
                             $Label = $this->scaleFormat($Value, AXIS_FORMAT_METRIC, $Decimals);

                             if ($LastLabel == $Label) {
                                 $ScaleOK = false;
                             }
                             $LastLabel = $Label;
                         }
                         if ($ScaleOK) {
                             $Done = true;
                             $GoodDecimals = $Decimals;
                         }
                     }
                 }

                 $Scale["Format"] = $GoodDecimals;
             }
         } else {
             /* If all values are the same we keep a +1/-1 scale */
             $Rows = 2;
             $XMin = $XMax-1;
             $XMax = $XMax+1;
             $RowHeight = 1;

             /* Return the results */
             $Scale["Rows"] = $Rows;
             $Scale["RowHeight"] = $RowHeight;
             $Scale["XMin"] = $XMin;
             $Scale["XMax"] = $XMax;
         }

         return($Scale);
     }

     public function modulo($Value1, $Value2)
     {
         if (floor($Value2) == 0) {
             return(0);
         }
         if (floor($Value2) != 0) {
             return($Value1 % $Value2);
         }

         $MinValue = min($Value1, $Value2);
         $Factor = 10;
         while (floor($MinValue*$Factor) == 0) {
             $Factor = $Factor * 10;
         }

         return(($Value1*$Factor) % ($Value2*$Factor));
     }

     /* Draw an X threshold */
     public function drawXThreshold($Value, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 255;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 50;
         $Weight		= isset($Format["Weight"]) ? $Format["Weight"] : null;
         $Ticks		= isset($Format["Ticks"]) ? $Format["Ticks"] : 6;
         $Wide		= isset($Format["Wide"]) ? $Format["Wide"] : false;
         $WideFactor	= isset($Format["WideFactor"]) ? $Format["WideFactor"] : 5;
         $WriteCaption	= isset($Format["WriteCaption"]) ? $Format["WriteCaption"] : false;
         $Caption		= isset($Format["Caption"]) ? $Format["Caption"] : null;
         $CaptionAlign	= isset($Format["CaptionAlign"]) ? $Format["CaptionAlign"] : CAPTION_LEFT_TOP;
         $CaptionOffset     = isset($Format["CaptionOffset"]) ? $Format["CaptionOffset"] : 5;
         $CaptionR		= isset($Format["CaptionR"]) ? $Format["CaptionR"] : 255;
         $CaptionG		= isset($Format["CaptionG"]) ? $Format["CaptionG"] : 255;
         $CaptionB		= isset($Format["CaptionB"]) ? $Format["CaptionB"] : 255;
         $CaptionAlpha	= isset($Format["CaptionAlpha"]) ? $Format["CaptionAlpha"] : 100;
         $DrawBox		= isset($Format["DrawBox"]) ? $Format["DrawBox"] : true;
         $DrawBoxBorder	= isset($Format["DrawBoxBorder"]) ? $Format["DrawBoxBorder"] : false;
         $BorderOffset	= isset($Format["BorderOffset"]) ? $Format["BorderOffset"] : 3;
         $BoxRounded	= isset($Format["BoxRounded"]) ? $Format["BoxRounded"] : true;
         $RoundedRadius	= isset($Format["RoundedRadius"]) ? $Format["RoundedRadius"] : 3;
         $BoxR		= isset($Format["BoxR"]) ? $Format["BoxR"] : 0;
         $BoxG		= isset($Format["BoxG"]) ? $Format["BoxG"] : 0;
         $BoxB		= isset($Format["BoxB"]) ? $Format["BoxB"] : 0;
         $BoxAlpha		= isset($Format["BoxAlpha"]) ? $Format["BoxAlpha"] : 30;
         $BoxSurrounding	= isset($Format["BoxSurrounding"]) ? $Format["BoxSurrounding"] : "";
         $BoxBorderR	= isset($Format["BoxBorderR"]) ? $Format["BoxBorderR"] : 255;
         $BoxBorderG	= isset($Format["BoxBorderG"]) ? $Format["BoxBorderG"] : 255;
         $BoxBorderB	= isset($Format["BoxBorderB"]) ? $Format["BoxBorderB"] : 255;
         $BoxBorderAlpha	= isset($Format["BoxBorderAlpha"]) ? $Format["BoxBorderAlpha"] : 100;
         $ValueIsLabel	= isset($Format["ValueIsLabel"]) ? $Format["ValueIsLabel"] : false;

         $Data           = $this->DataSet->getData();
         $AbscissaMargin = $this->getAbscissaMargin($Data);
         $XScale         = $this->scaleGetXSettings();

         if (is_array($Value)) {
             foreach ($Value as $Key => $ID) {
                 $this->drawXThreshold($ID, $Format);
             }
             return(0);
         }

         if ($ValueIsLabel) {
             $Format["ValueIsLabel"] = false;
             foreach ($Data["Series"][$Data["Abscissa"]]["Data"] as $Key => $SerieValue) {
                 if ($SerieValue == $Value) {
                     $this->drawXThreshold($Key, $Format);
                 }
             }

             return(0);
         }

         $CaptionSettings = array("DrawBox"=>$DrawBox,"DrawBoxBorder"=>$DrawBoxBorder,"BorderOffset"=>$BorderOffset,"BoxRounded"=>$BoxRounded,"RoundedRadius"=>$RoundedRadius,
                              "BoxR"=>$BoxR,"BoxG"=>$BoxG,"BoxB"=>$BoxB,"BoxAlpha"=>$BoxAlpha,"BoxSurrounding"=>$BoxSurrounding,
                              "BoxBorderR"=>$BoxBorderR,"BoxBorderG"=>$BoxBorderG,"BoxBorderB"=>$BoxBorderB,"BoxBorderAlpha"=>$BoxBorderAlpha,
                              "R"=>$CaptionR,"G"=>$CaptionG,"B"=>$CaptionB,"Alpha"=>$CaptionAlpha);

         if ($Caption == null) {
             if (isset($Data["Abscissa"])) {
                 if (isset($Data["Series"][$Data["Abscissa"]]["Data"][$Value])) {
                     $Caption = $Data["Series"][$Data["Abscissa"]]["Data"][$Value];
                 } else {
                     $Caption = $Value;
                 }
             } else {
                 $Caption = $Value;
             }
         }

         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             $XStep = (($this->GraphAreaX2 - $this->GraphAreaX1) - $XScale[0] *2) / $XScale[1];
             $XPos  = $this->GraphAreaX1 + $XScale[0] + $XStep * $Value;
             $YPos1 = $this->GraphAreaY1 + $Data["YMargin"];
             $YPos2 = $this->GraphAreaY2 - $Data["YMargin"];

             if ($XPos >= $this->GraphAreaX1 + $AbscissaMargin && $XPos <= $this->GraphAreaX2 - $AbscissaMargin) {
                 $this->drawLine($XPos, $YPos1, $XPos, $YPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));

                 if ($Wide) {
                     $this->drawLine($XPos-1, $YPos1, $XPos-1, $YPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                     $this->drawLine($XPos+1, $YPos1, $XPos+1, $YPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                 }

                 if ($WriteCaption) {
                     if ($CaptionAlign == CAPTION_LEFT_TOP) {
                         $Y = $YPos1 + $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_TOPMIDDLE;
                     } else {
                         $Y = $YPos2 - $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_BOTTOMMIDDLE;
                     }
           
                     $this->drawText($XPos, $Y, $Caption, $CaptionSettings);
                 }

                 return(array("X"=>$XPos));
             }
         } elseif ($Data["Orientation"] == SCALE_POS_TOPBOTTOM) {
             $XStep = (($this->GraphAreaY2 - $this->GraphAreaY1) - $XScale[0] *2) / $XScale[1];
             $XPos  = $this->GraphAreaY1 + $XScale[0] + $XStep * $Value;
             $YPos1 = $this->GraphAreaX1 + $Data["YMargin"];
             $YPos2 = $this->GraphAreaX2 - $Data["YMargin"];

             if ($XPos >= $this->GraphAreaY1 + $AbscissaMargin && $XPos <= $this->GraphAreaY2 - $AbscissaMargin) {
                 $this->drawLine($YPos1, $XPos, $YPos2, $XPos, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));

                 if ($Wide) {
                     $this->drawLine($YPos1, $XPos-1, $YPos2, $XPos-1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                     $this->drawLine($YPos1, $XPos+1, $YPos2, $XPos+1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                 }

                 if ($WriteCaption) {
                     if ($CaptionAlign == CAPTION_LEFT_TOP) {
                         $Y = $YPos1 + $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_MIDDLELEFT;
                     } else {
                         $Y = $YPos2 - $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_MIDDLERIGHT;
                     }
           
                     $this->drawText($Y, $XPos, $Caption, $CaptionSettings);
                 }

                 return(array("X"=>$XPos));
             }
         }
     }

     /* Draw an X threshold area */
     public function drawXThresholdArea($Value1, $Value2, $Format="")
     {
         $R		= isset($Format["R"]) ? $Format["R"] : 255;
         $G		= isset($Format["G"]) ? $Format["G"] : 0;
         $B		= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 20;
         $Border    = isset($Format["Border"]) ? $Format["Border"] : true;
         $BorderR   = isset($Format["BorderR"]) ? $Format["BorderR"] : $R;
         $BorderG   = isset($Format["BorderG"]) ? $Format["BorderG"] : $G;
         $BorderB   = isset($Format["BorderB"]) ? $Format["BorderB"] : $B;
         $BorderAlpha = isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : $Alpha + 20;
         $BorderTicks = isset($Format["BorderTicks"]) ? $Format["BorderTicks"] : 2;
         $AreaName 	= isset($Format["AreaName"]) ? $Format["AreaName"] : null;
         $NameAngle	= isset($Format["NameAngle"]) ? $Format["NameAngle"] : ZONE_NAME_ANGLE_AUTO;
         $NameR	= isset($Format["NameR"]) ? $Format["NameR"] : 255;
         $NameG	= isset($Format["NameG"]) ? $Format["NameG"] : 255;
         $NameB	= isset($Format["NameB"]) ? $Format["NameB"] : 255;
         $NameAlpha	= isset($Format["NameAlpha"]) ? $Format["NameAlpha"] : 100;
         $DisableShadowOnArea = isset($Format["DisableShadowOnArea"]) ? $Format["DisableShadowOnArea"] : true;

         $RestoreShadow = $this->Shadow;
         if ($DisableShadowOnArea && $this->Shadow) {
             $this->Shadow = false;
         }

         if ($BorderAlpha >100) {
             $BorderAlpha = 100;
         }

         $Data           = $this->DataSet->getData();
         $XScale         = $this->scaleGetXSettings();
         $AbscissaMargin = $this->getAbscissaMargin($Data);

         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             $XStep = (($this->GraphAreaX2 - $this->GraphAreaX1) - $XScale[0] *2) / $XScale[1];
             $XPos1 = $this->GraphAreaX1 + $XScale[0] + $XStep * $Value1;
             $XPos2 = $this->GraphAreaX1 + $XScale[0] + $XStep * $Value2;
             $YPos1 = $this->GraphAreaY1 + $Data["YMargin"];
             $YPos2 = $this->GraphAreaY2 - $Data["YMargin"];

             if ($XPos1 < $this->GraphAreaX1 + $XScale[0]) {
                 $XPos1 = $this->GraphAreaX1 + $XScale[0];
             }
             if ($XPos1 > $this->GraphAreaX2 - $XScale[0]) {
                 $XPos1 = $this->GraphAreaX2 - $XScale[0];
             }
             if ($XPos2 < $this->GraphAreaX1 + $XScale[0]) {
                 $XPos2 = $this->GraphAreaX1 + $XScale[0];
             }
             if ($XPos2 > $this->GraphAreaX2 - $XScale[0]) {
                 $XPos2 = $this->GraphAreaX2 - $XScale[0];
             }

             $this->drawFilledRectangle($XPos1, $YPos1, $XPos2, $YPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));

             if ($Border) {
                 $this->drawLine($XPos1, $YPos1, $XPos1, $YPos2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
                 $this->drawLine($XPos2, $YPos1, $XPos2, $YPos2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
             }

             if ($AreaName != null) {
                 $XPos = ($XPos2-$XPos1)/2 + $XPos1;
                 $YPos = ($YPos2-$YPos1)/2 + $YPos1;

                 if ($NameAngle == ZONE_NAME_ANGLE_AUTO) {
                     $TxtPos   = $this->getTextBox($XPos, $YPos, $this->FontName, $this->FontSize, 0, $AreaName);
                     $TxtWidth = $TxtPos[1]["X"] - $TxtPos[0]["X"];
                     if (abs($XPos2 - $XPos1) > $TxtWidth) {
                         $NameAngle = 0;
                     } else {
                         $NameAngle = 90;
                     }
                 }
                 $this->Shadow = $RestoreShadow;
                 $this->drawText($XPos, $YPos, $AreaName, array("R"=>$NameR,"G"=>$NameG,"B"=>$NameB,"Alpha"=>$NameAlpha,"Angle"=>$NameAngle,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE));
                 if ($DisableShadowOnArea) {
                     $this->Shadow = false;
                 }
             }

             $this->Shadow = $RestoreShadow;
             return(array("X1"=>$XPos1,"X2"=>$XPos2));
         } elseif ($Data["Orientation"] == SCALE_POS_TOPBOTTOM) {
             $XStep = (($this->GraphAreaY2 - $this->GraphAreaY1) - $XScale[0] *2) / $XScale[1];
             $XPos1 = $this->GraphAreaY1 + $XScale[0] + $XStep * $Value1;
             $XPos2 = $this->GraphAreaY1 + $XScale[0] + $XStep * $Value2;
             $YPos1 = $this->GraphAreaX1 + $Data["YMargin"];
             $YPos2 = $this->GraphAreaX2 - $Data["YMargin"];

             if ($XPos1 < $this->GraphAreaY1 + $XScale[0]) {
                 $XPos1 = $this->GraphAreaY1 + $XScale[0];
             }
             if ($XPos1 > $this->GraphAreaY2 - $XScale[0]) {
                 $XPos1 = $this->GraphAreaY2 - $XScale[0];
             }
             if ($XPos2 < $this->GraphAreaY1 + $XScale[0]) {
                 $XPos2 = $this->GraphAreaY1 + $XScale[0];
             }
             if ($XPos2 > $this->GraphAreaY2 - $XScale[0]) {
                 $XPos2 = $this->GraphAreaY2 - $XScale[0];
             }

             $this->drawFilledRectangle($YPos1, $XPos1, $YPos2, $XPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));

             if ($Border) {
                 $this->drawLine($YPos1, $XPos1, $YPos2, $XPos1, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
                 $this->drawLine($YPos1, $XPos2, $YPos2, $XPos2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
             }

             if ($AreaName != null) {
                 $XPos = ($XPos2-$XPos1)/2 + $XPos1;
                 $YPos = ($YPos2-$YPos1)/2 + $YPos1;

                 $this->Shadow = $RestoreShadow;
                 $this->drawText($YPos, $XPos, $AreaName, array("R"=>$NameR,"G"=>$NameG,"B"=>$NameB,"Alpha"=>$NameAlpha,"Angle"=>0,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE));
                 if ($DisableShadowOnArea) {
                     $this->Shadow = false;
                 }
             }

             $this->Shadow = $RestoreShadow;
             return(array("X1"=>$XPos1,"X2"=>$XPos2));
         }
     }

     /* Draw an Y threshold with the computed scale */
     public function drawThreshold($Value, $Format="")
     {
         $AxisID		= isset($Format["AxisID"]) ? $Format["AxisID"] : 0;
         $R			= isset($Format["R"]) ? $Format["R"] : 255;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 50;
         $Weight		= isset($Format["Weight"]) ? $Format["Weight"] : null;
         $Ticks		= isset($Format["Ticks"]) ? $Format["Ticks"] : 6;
         $Wide		= isset($Format["Wide"]) ? $Format["Wide"] : false;
         $WideFactor	= isset($Format["WideFactor"]) ? $Format["WideFactor"] : 5;
         $WriteCaption	= isset($Format["WriteCaption"]) ? $Format["WriteCaption"] : false;
         $Caption		= isset($Format["Caption"]) ? $Format["Caption"] : null;
         $CaptionAlign	= isset($Format["CaptionAlign"]) ? $Format["CaptionAlign"] : CAPTION_LEFT_TOP;
         $CaptionOffset     = isset($Format["CaptionOffset"]) ? $Format["CaptionOffset"] : 10;
         $CaptionR		= isset($Format["CaptionR"]) ? $Format["CaptionR"] : 255;
         $CaptionG		= isset($Format["CaptionG"]) ? $Format["CaptionG"] : 255;
         $CaptionB		= isset($Format["CaptionB"]) ? $Format["CaptionB"] : 255;
         $CaptionAlpha	= isset($Format["CaptionAlpha"]) ? $Format["CaptionAlpha"] : 100;
         $DrawBox		= isset($Format["DrawBox"]) ? $Format["DrawBox"] : true;
         $DrawBoxBorder	= isset($Format["DrawBoxBorder"]) ? $Format["DrawBoxBorder"] : false;
         $BorderOffset	= isset($Format["BorderOffset"]) ? $Format["BorderOffset"] : 5;
         $BoxRounded	= isset($Format["BoxRounded"]) ? $Format["BoxRounded"] : true;
         $RoundedRadius	= isset($Format["RoundedRadius"]) ? $Format["RoundedRadius"] : 3;
         $BoxR		= isset($Format["BoxR"]) ? $Format["BoxR"] : 0;
         $BoxG		= isset($Format["BoxG"]) ? $Format["BoxG"] : 0;
         $BoxB		= isset($Format["BoxB"]) ? $Format["BoxB"] : 0;
         $BoxAlpha		= isset($Format["BoxAlpha"]) ? $Format["BoxAlpha"] : 20;
         $BoxSurrounding	= isset($Format["BoxSurrounding"]) ? $Format["BoxSurrounding"] : "";
         $BoxBorderR	= isset($Format["BoxBorderR"]) ? $Format["BoxBorderR"] : 255;
         $BoxBorderG	= isset($Format["BoxBorderG"]) ? $Format["BoxBorderG"] : 255;
         $BoxBorderB	= isset($Format["BoxBorderB"]) ? $Format["BoxBorderB"] : 255;
         $BoxBorderAlpha	= isset($Format["BoxBorderAlpha"]) ? $Format["BoxBorderAlpha"] : 100;
         $NoMargin		= isset($Format["NoMargin"]) ? $Format["NoMargin"] : false;

         if (is_array($Value)) {
             foreach ($Value as $Key => $ID) {
                 $this->drawThreshold($ID, $Format);
             }
             return(0);
         }

         $CaptionSettings = array("DrawBox"=>$DrawBox,"DrawBoxBorder"=>$DrawBoxBorder,"BorderOffset"=>$BorderOffset,"BoxRounded"=>$BoxRounded,"RoundedRadius"=>$RoundedRadius,
                              "BoxR"=>$BoxR,"BoxG"=>$BoxG,"BoxB"=>$BoxB,"BoxAlpha"=>$BoxAlpha,"BoxSurrounding"=>$BoxSurrounding,
                              "BoxBorderR"=>$BoxBorderR,"BoxBorderG"=>$BoxBorderG,"BoxBorderB"=>$BoxBorderB,"BoxBorderAlpha"=>$BoxBorderAlpha,
                              "R"=>$CaptionR,"G"=>$CaptionG,"B"=>$CaptionB,"Alpha"=>$CaptionAlpha);

         $Data           = $this->DataSet->getData();
         $AbscissaMargin = $this->getAbscissaMargin($Data);

         if ($NoMargin) {
             $AbscissaMargin = 0;
         }
         if (!isset($Data["Axis"][$AxisID])) {
             return(-1);
         }
         if ($Caption == null) {
             $Caption = $Value;
         }

         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             $YPos = $this->scaleComputeY($Value, array("AxisID"=>$AxisID));
             if ($YPos >= $this->GraphAreaY1+$Data["Axis"][$AxisID]["Margin"] && $YPos <= $this->GraphAreaY2-$Data["Axis"][$AxisID]["Margin"]) {
                 $X1 = $this->GraphAreaX1 + $AbscissaMargin;
                 $X2 = $this->GraphAreaX2 - $AbscissaMargin;

                 $this->drawLine($X1, $YPos, $X2, $YPos, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));

                 if ($Wide) {
                     $this->drawLine($X1, $YPos-1, $X2, $YPos-1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                     $this->drawLine($X1, $YPos+1, $X2, $YPos+1, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                 }

                 if ($WriteCaption) {
                     if ($CaptionAlign == CAPTION_LEFT_TOP) {
                         $X = $X1 + $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_MIDDLELEFT;
                     } else {
                         $X = $X2 - $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_MIDDLERIGHT;
                     }
           
                     $this->drawText($X, $YPos, $Caption, $CaptionSettings);
                 }
             }

             return(array("Y"=>$YPos));
         }

         if ($Data["Orientation"] == SCALE_POS_TOPBOTTOM) {
             $XPos = $this->scaleComputeY($Value, array("AxisID"=>$AxisID));
             if ($XPos >= $this->GraphAreaX1+$Data["Axis"][$AxisID]["Margin"] && $XPos <= $this->GraphAreaX2-$Data["Axis"][$AxisID]["Margin"]) {
                 $Y1 = $this->GraphAreaY1 + $AbscissaMargin;
                 $Y2 = $this->GraphAreaY2 - $AbscissaMargin;

                 $this->drawLine($XPos, $Y1, $XPos, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));

                 if ($Wide) {
                     $this->drawLine($XPos-1, $Y1, $XPos-1, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                     $this->drawLine($XPos+1, $Y1, $XPos+1, $Y2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/$WideFactor,"Ticks"=>$Ticks));
                 }

                 if ($WriteCaption) {
                     if ($CaptionAlign == CAPTION_LEFT_TOP) {
                         $Y = $Y1 + $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_TOPMIDDLE;
                     } else {
                         $Y = $Y2 - $CaptionOffset;
                         $CaptionSettings["Align"] = TEXT_ALIGN_BOTTOMMIDDLE;
                     }

                     $CaptionSettings["Align"] = TEXT_ALIGN_TOPMIDDLE;
                     $this->drawText($XPos, $Y, $Caption, $CaptionSettings);
                 }
             }

             return(array("Y"=>$XPos));
         }
     }

     /* Draw a threshold with the computed scale */
     public function drawThresholdArea($Value1, $Value2, $Format="")
     {
         $AxisID	= isset($Format["AxisID"]) ? $Format["AxisID"] : 0;
         $R		= isset($Format["R"]) ? $Format["R"] : 255;
         $G		= isset($Format["G"]) ? $Format["G"] : 0;
         $B		= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 20;
         $Border    = isset($Format["Border"]) ? $Format["Border"] : true;
         $BorderR   = isset($Format["BorderR"]) ? $Format["BorderR"] : $R;
         $BorderG   = isset($Format["BorderG"]) ? $Format["BorderG"] : $G;
         $BorderB   = isset($Format["BorderB"]) ? $Format["BorderB"] : $B;
         $BorderAlpha = isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : $Alpha + 20;
         $BorderTicks = isset($Format["BorderTicks"]) ? $Format["BorderTicks"] : 2;
         $AreaName 	= isset($Format["AreaName"]) ? $Format["AreaName"] : null;
         $NameAngle	= isset($Format["NameAngle"]) ? $Format["NameAngle"] : ZONE_NAME_ANGLE_AUTO;
         $NameR	= isset($Format["NameR"]) ? $Format["NameR"] : 255;
         $NameG	= isset($Format["NameG"]) ? $Format["NameG"] : 255;
         $NameB	= isset($Format["NameB"]) ? $Format["NameB"] : 255;
         $NameAlpha	= isset($Format["NameAlpha"]) ? $Format["NameAlpha"] : 100;
         $DisableShadowOnArea = isset($Format["DisableShadowOnArea"]) ? $Format["DisableShadowOnArea"] : true;
         $NoMargin	= isset($Format["NoMargin"]) ? $Format["NoMargin"] : false;

         if ($Value1 > $Value2) {
             list($Value1, $Value2) = array($Value2, $Value1);
         }

         $RestoreShadow = $this->Shadow;
         if ($DisableShadowOnArea && $this->Shadow) {
             $this->Shadow = false;
         }

         if ($BorderAlpha >100) {
             $BorderAlpha = 100;
         }

         $Data           = $this->DataSet->getData();
         $AbscissaMargin = $this->getAbscissaMargin($Data);

         if ($NoMargin) {
             $AbscissaMargin = 0;
         }
         if (!isset($Data["Axis"][$AxisID])) {
             return(-1);
         }

         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             $XPos1 = $this->GraphAreaX1 + $AbscissaMargin;
             $XPos2 = $this->GraphAreaX2 - $AbscissaMargin;
             $YPos1 = $this->scaleComputeY($Value1, array("AxisID"=>$AxisID));
             $YPos2 = $this->scaleComputeY($Value2, array("AxisID"=>$AxisID));

             if ($YPos1 < $this->GraphAreaY1+$Data["Axis"][$AxisID]["Margin"]) {
                 $YPos1 = $this->GraphAreaY1+$Data["Axis"][$AxisID]["Margin"];
             }
             if ($YPos1 > $this->GraphAreaY2-$Data["Axis"][$AxisID]["Margin"]) {
                 $YPos1 = $this->GraphAreaY2-$Data["Axis"][$AxisID]["Margin"];
             }
             if ($YPos2 < $this->GraphAreaY1+$Data["Axis"][$AxisID]["Margin"]) {
                 $YPos2 = $this->GraphAreaY1+$Data["Axis"][$AxisID]["Margin"];
             }
             if ($YPos2 > $this->GraphAreaY2-$Data["Axis"][$AxisID]["Margin"]) {
                 $YPos2 = $this->GraphAreaY2-$Data["Axis"][$AxisID]["Margin"];
             }

             $this->drawFilledRectangle($XPos1, $YPos1, $XPos2, $YPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
             if ($Border) {
                 $this->drawLine($XPos1, $YPos1, $XPos2, $YPos1, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
                 $this->drawLine($XPos1, $YPos2, $XPos2, $YPos2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
             }

             if ($AreaName != null) {
                 $XPos = ($XPos2-$XPos1)/2 + $XPos1;
                 $YPos = ($YPos2-$YPos1)/2 + $YPos1;
                 $this->Shadow = $RestoreShadow;
                 $this->drawText($XPos, $YPos, $AreaName, array("R"=>$NameR,"G"=>$NameG,"B"=>$NameB,"Alpha"=>$NameAlpha,"Angle"=>0,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE));
                 if ($DisableShadowOnArea) {
                     $this->Shadow = false;
                 }
             }

             $this->Shadow = $RestoreShadow;
             return(array("Y1"=>$YPos1,"Y2"=>$YPos2));
         } elseif ($Data["Orientation"] == SCALE_POS_TOPBOTTOM) {
             $YPos1 = $this->GraphAreaY1 + $AbscissaMargin;
             $YPos2 = $this->GraphAreaY2 - $AbscissaMargin;
             $XPos1 = $this->scaleComputeY($Value1, array("AxisID"=>$AxisID));
             $XPos2 = $this->scaleComputeY($Value2, array("AxisID"=>$AxisID));

             if ($XPos1 < $this->GraphAreaX1+$Data["Axis"][$AxisID]["Margin"]) {
                 $XPos1 = $this->GraphAreaX1+$Data["Axis"][$AxisID]["Margin"];
             }
             if ($XPos1 > $this->GraphAreaX2-$Data["Axis"][$AxisID]["Margin"]) {
                 $XPos1 = $this->GraphAreaX2-$Data["Axis"][$AxisID]["Margin"];
             }
             if ($XPos2 < $this->GraphAreaX1+$Data["Axis"][$AxisID]["Margin"]) {
                 $XPos2 = $this->GraphAreaX1+$Data["Axis"][$AxisID]["Margin"];
             }
             if ($XPos2 > $this->GraphAreaX2-$Data["Axis"][$AxisID]["Margin"]) {
                 $XPos2 = $this->GraphAreaX2-$Data["Axis"][$AxisID]["Margin"];
             }

             $this->drawFilledRectangle($XPos1, $YPos1, $XPos2, $YPos2, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
             if ($Border) {
                 $this->drawLine($XPos1, $YPos1, $XPos1, $YPos2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
                 $this->drawLine($XPos2, $YPos1, $XPos2, $YPos2, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Ticks"=>$BorderTicks));
             }

             if ($AreaName != null) {
                 $XPos = ($YPos2-$YPos1)/2 + $YPos1;
                 $YPos = ($XPos2-$XPos1)/2 + $XPos1;

                 if ($NameAngle == ZONE_NAME_ANGLE_AUTO) {
                     $TxtPos   = $this->getTextBox($XPos, $YPos, $this->FontName, $this->FontSize, 0, $AreaName);
                     $TxtWidth = $TxtPos[1]["X"] - $TxtPos[0]["X"];
                     if (abs($XPos2 - $XPos1) > $TxtWidth) {
                         $NameAngle = 0;
                     } else {
                         $NameAngle = 90;
                     }
                 }
                 $this->Shadow = $RestoreShadow;
                 $this->drawText($YPos, $XPos, $AreaName, array("R"=>$NameR,"G"=>$NameG,"B"=>$NameB,"Alpha"=>$NameAlpha,"Angle"=>$NameAngle,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE));
                 if ($DisableShadowOnArea) {
                     $this->Shadow = false;
                 }
             }

             $this->Shadow = $RestoreShadow;
             return(array("Y1"=>$XPos1,"Y2"=>$XPos2));
         }
     }

     public function scaleGetXSettings()
     {
         $Data = $this->DataSet->getData();
         foreach ($Data["Axis"] as $AxisID => $Settings) {
             if ($Settings["Identity"] == AXIS_X) {
                 $Rows = $Settings["Rows"];

                 return(array($Settings["Margin"],$Rows));
             }
         }
     }

     public function scaleComputeY($Values, $Option="", $ReturnOnly0Height=false)
     {
         $AxisID	= isset($Option["AxisID"]) ? $Option["AxisID"] : 0;
         $SerieName	= isset($Option["SerieName"]) ? $Option["SerieName"] : null;

         $Data = $this->DataSet->getData();
         if (!isset($Data["Axis"][$AxisID])) {
             return(-1);
         }

         if ($SerieName != null) {
             $AxisID = $Data["Series"][$SerieName]["Axis"];
         }
         if (!is_array($Values)) {
             $tmp = $Values;
             $Values = "";
             $Values[0] = $tmp;
         }

         $Result = "";
         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             $Height      = ($this->GraphAreaY2 - $this->GraphAreaY1) - $Data["Axis"][$AxisID]["Margin"]*2;
             $ScaleHeight = $Data["Axis"][$AxisID]["ScaleMax"] - $Data["Axis"][$AxisID]["ScaleMin"];
             $Step        = $Height / $ScaleHeight;

             if ($ReturnOnly0Height) {
                 foreach ($Values as $Key => $Value) {
                     if ($Value == VOID) {
                         $Result[] = VOID;
                     } else {
                         $Result[] = $Step * $Value;
                     }
                 }
             } else {
                 foreach ($Values as $Key => $Value) {
                     if ($Value == VOID) {
                         $Result[] = VOID;
                     } else {
                         $Result[] = $this->GraphAreaY2 - $Data["Axis"][$AxisID]["Margin"] - ($Step * ($Value-$Data["Axis"][$AxisID]["ScaleMin"]));
                     }
                 }
             }
         } else {
             $Width      = ($this->GraphAreaX2 - $this->GraphAreaX1) - $Data["Axis"][$AxisID]["Margin"]*2;
             $ScaleWidth = $Data["Axis"][$AxisID]["ScaleMax"] - $Data["Axis"][$AxisID]["ScaleMin"];
             $Step       = $Width / $ScaleWidth;

             if ($ReturnOnly0Height) {
                 foreach ($Values as $Key => $Value) {
                     if ($Value == VOID) {
                         $Result[] = VOID;
                     } else {
                         $Result[] = $Step * $Value;
                     }
                 }
             } else {
                 foreach ($Values as $Key => $Value) {
                     if ($Value == VOID) {
                         $Result[] = VOID;
                     } else {
                         $Result[] = $this->GraphAreaX1 + $Data["Axis"][$AxisID]["Margin"] + ($Step * ($Value-$Data["Axis"][$AxisID]["ScaleMin"]));
                     }
                 }
             }
         }

         if (count($Result) == 1) {
             return($Result[0]);
         }
         return($Result);
     }

     /* Format the axis values */
     public function scaleFormat($Value, $Mode=null, $Format=null, $Unit=null)
     {
         if ($Value == VOID) {
             return("");
         }

         if ($Mode == AXIS_FORMAT_TRAFFIC) {
             if ($Value == 0) {
                 return("0B");
             }
             $Units = array("B","KB","MB","GB","TB","PB");
             $Sign = "";
             if ($Value < 0) {
                 $Value = abs($Value);
                 $Sign = "-";
             }

             $Value = number_format($Value/pow(1024, ($Scale=floor(log($Value, 1024)))), 2, ",", ".");
             return($Sign.$Value." ".$Units[$Scale]);
         }

         if ($Mode == AXIS_FORMAT_CUSTOM) {
             if (function_exists($Format)) {
                 return(call_user_func($Format, $Value));
             }
         }

         if ($Mode == AXIS_FORMAT_DATE) {
             if ($Format == null) {
                 $Pattern = "d/m/Y";
             } else {
                 $Pattern = $Format;
             }
             return(gmdate($Pattern, $Value));
         }

         if ($Mode == AXIS_FORMAT_TIME) {
             if ($Format == null) {
                 $Pattern = "H:i:s";
             } else {
                 $Pattern = $Format;
             }
             return(gmdate($Pattern, $Value));
         }

         if ($Mode == AXIS_FORMAT_CURRENCY) {
             return($Format.number_format($Value, 2));
         }

         if ($Mode == AXIS_FORMAT_METRIC) {
             if (abs($Value) > 1000000000) {
                 return(round($Value/1000000000, $Format)."g".$Unit);
             }
             if (abs($Value) > 1000000) {
                 return(round($Value/1000000, $Format)."m".$Unit);
             } elseif (abs($Value) >= 1000) {
                 return(round($Value/1000, $Format)."k".$Unit);
             }
         }
         return($Value.$Unit);
     }

     /* Write Max value on a chart */
     public function writeBounds($Type=BOUND_BOTH, $Format=null)
     {
         $MaxLabelTxt	= isset($Format["MaxLabelTxt"]) ? $Format["MaxLabelTxt"] : "max=";
         $MinLabelTxt	= isset($Format["MinLabelTxt"]) ? $Format["MinLabelTxt"] : "min=";
         $Decimals		= isset($Format["Decimals"]) ? $Format["Decimals"] : 1;
         $ExcludedSeries	= isset($Format["ExcludedSeries"]) ? $Format["ExcludedSeries"] : "";
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 4;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $MaxDisplayR	= isset($Format["MaxDisplayR"]) ? $Format["MaxDisplayR"] : 0;
         $MaxDisplayG	= isset($Format["MaxDisplayG"]) ? $Format["MaxDisplayG"] : 0;
         $MaxDisplayB	= isset($Format["MaxDisplayB"]) ? $Format["MaxDisplayB"] : 0;
         $MinDisplayR	= isset($Format["MinDisplayR"]) ? $Format["MinDisplayR"] : 255;
         $MinDisplayG	= isset($Format["MinDisplayG"]) ? $Format["MinDisplayG"] : 255;
         $MinDisplayB	= isset($Format["MinDisplayB"]) ? $Format["MinDisplayB"] : 255;
         $MinLabelPos	= isset($Format["MinLabelPos"]) ? $Format["MinLabelPos"] : BOUND_LABEL_POS_AUTO;
         $MaxLabelPos	= isset($Format["MaxLabelPos"]) ? $Format["MaxLabelPos"] : BOUND_LABEL_POS_AUTO;
         $DrawBox		= isset($Format["DrawBox"]) ? $Format["DrawBox"] : true;
         $DrawBoxBorder	= isset($Format["DrawBoxBorder"]) ? $Format["DrawBoxBorder"] : false;
         $BorderOffset	= isset($Format["BorderOffset"]) ? $Format["BorderOffset"] : 5;
         $BoxRounded	= isset($Format["BoxRounded"]) ? $Format["BoxRounded"] : true;
         $RoundedRadius	= isset($Format["RoundedRadius"]) ? $Format["RoundedRadius"] : 3;
         $BoxR		= isset($Format["BoxR"]) ? $Format["BoxR"] : 0;
         $BoxG		= isset($Format["BoxG"]) ? $Format["BoxG"] : 0;
         $BoxB		= isset($Format["BoxB"]) ? $Format["BoxB"] : 0;
         $BoxAlpha		= isset($Format["BoxAlpha"]) ? $Format["BoxAlpha"] : 20;
         $BoxSurrounding	= isset($Format["BoxSurrounding"]) ? $Format["BoxSurrounding"] : "";
         $BoxBorderR	= isset($Format["BoxBorderR"]) ? $Format["BoxBorderR"] : 255;
         $BoxBorderG	= isset($Format["BoxBorderG"]) ? $Format["BoxBorderG"] : 255;
         $BoxBorderB	= isset($Format["BoxBorderB"]) ? $Format["BoxBorderB"] : 255;
         $BoxBorderAlpha	= isset($Format["BoxBorderAlpha"]) ? $Format["BoxBorderAlpha"] : 100;

         $CaptionSettings = array("DrawBox"=>$DrawBox,"DrawBoxBorder"=>$DrawBoxBorder,"BorderOffset"=>$BorderOffset,"BoxRounded"=>$BoxRounded,"RoundedRadius"=>$RoundedRadius,
                              "BoxR"=>$BoxR,"BoxG"=>$BoxG,"BoxB"=>$BoxB,"BoxAlpha"=>$BoxAlpha,"BoxSurrounding"=>$BoxSurrounding,
                              "BoxBorderR"=>$BoxBorderR,"BoxBorderG"=>$BoxBorderG,"BoxBorderB"=>$BoxBorderB,"BoxBorderAlpha"=>$BoxBorderAlpha);

         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         $Data = $this->DataSet->getData();
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"] && !isset($ExcludedSeries[$SerieName])) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $MinValue = $this->DataSet->getMin($SerieName);
                 $MaxValue = $this->DataSet->getMax($SerieName);

                 $MinPos = VOID;
                 $MaxPos = VOID;
                 foreach ($Serie["Data"] as $Key => $Value) {
                     if ($Value == $MinValue && $MinPos == VOID) {
                         $MinPos = $Key;
                     }
                     if ($Value == $MaxValue) {
                         $MaxPos = $Key;
                     }
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     $XStep       = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     $X           = $this->GraphAreaX1 + $XMargin;
                     $SerieOffset = isset($Serie["XOffset"]) ? $Serie["XOffset"] : 0;

                     if ($Type == BOUND_MAX || $Type == BOUND_BOTH) {
                         if ($MaxLabelPos == BOUND_LABEL_POS_TOP    || ($MaxLabelPos ==  BOUND_LABEL_POS_AUTO && $MaxValue >= 0)) {
                             $YPos  = $PosArray[$MaxPos] - $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                         }
                         if ($MaxLabelPos == BOUND_LABEL_POS_BOTTOM || ($MaxLabelPos ==  BOUND_LABEL_POS_AUTO && $MaxValue < 0)) {
                             $YPos  = $PosArray[$MaxPos] + $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_TOPMIDDLE;
                         }

                         $XPos  = $X + $MaxPos*$XStep + $SerieOffset;
                         $Label = $MaxLabelTxt.$this->scaleFormat(round($MaxValue, $Decimals), $Mode, $Format, $Unit);

                         $TxtPos  = $this->getTextBox($XPos, $YPos, $this->FontName, $this->FontSize, 0, $Label);
                         $XOffset = 0;
                         $YOffset = 0;
                         if ($TxtPos[0]["X"] < $this->GraphAreaX1) {
                             $XOffset = (($this->GraphAreaX1 - $TxtPos[0]["X"])/2);
                         }
                         if ($TxtPos[1]["X"] > $this->GraphAreaX2) {
                             $XOffset = -(($TxtPos[1]["X"] - $this->GraphAreaX2)/2);
                         }
                         if ($TxtPos[2]["Y"] < $this->GraphAreaY1) {
                             $YOffset = $this->GraphAreaY1 - $TxtPos[2]["Y"];
                         }
                         if ($TxtPos[0]["Y"] > $this->GraphAreaY2) {
                             $YOffset = -($TxtPos[0]["Y"] - $this->GraphAreaY2);
                         }

                         $CaptionSettings["R"] = $MaxDisplayR;
                         $CaptionSettings["G"] = $MaxDisplayG;
                         $CaptionSettings["B"] = $MaxDisplayB;
                         $CaptionSettings["Align"] = $Align;

                         $this->drawText($XPos+$XOffset, $YPos+$YOffset, $Label, $CaptionSettings);
                     }

                     if ($Type == BOUND_MIN || $Type == BOUND_BOTH) {
                         if ($MinLabelPos == BOUND_LABEL_POS_TOP    || ($MinLabelPos ==  BOUND_LABEL_POS_AUTO && $MinValue >= 0)) {
                             $YPos  = $PosArray[$MinPos] - $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                         }
                         if ($MinLabelPos == BOUND_LABEL_POS_BOTTOM || ($MinLabelPos ==  BOUND_LABEL_POS_AUTO && $MinValue < 0)) {
                             $YPos  = $PosArray[$MinPos] + $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_TOPMIDDLE;
                         }

                         $XPos  = $X + $MinPos*$XStep + $SerieOffset;
                         $Label = $MinLabelTxt.$this->scaleFormat(round($MinValue, $Decimals), $Mode, $Format, $Unit);

                         $TxtPos  = $this->getTextBox($XPos, $YPos, $this->FontName, $this->FontSize, 0, $Label);
                         $XOffset = 0;
                         $YOffset = 0;
                         if ($TxtPos[0]["X"] < $this->GraphAreaX1) {
                             $XOffset = (($this->GraphAreaX1 - $TxtPos[0]["X"])/2);
                         }
                         if ($TxtPos[1]["X"] > $this->GraphAreaX2) {
                             $XOffset = -(($TxtPos[1]["X"] - $this->GraphAreaX2)/2);
                         }
                         if ($TxtPos[2]["Y"] < $this->GraphAreaY1) {
                             $YOffset = $this->GraphAreaY1 - $TxtPos[2]["Y"];
                         }
                         if ($TxtPos[0]["Y"] > $this->GraphAreaY2) {
                             $YOffset = -($TxtPos[0]["Y"] - $this->GraphAreaY2);
                         }

                         $CaptionSettings["R"] = $MinDisplayR;
                         $CaptionSettings["G"] = $MinDisplayG;
                         $CaptionSettings["B"] = $MinDisplayB;
                         $CaptionSettings["Align"] = $Align;

                         $this->drawText($XPos+$XOffset, $YPos-$DisplayOffset+$YOffset, $Label, $CaptionSettings);
                     }
                 } else {
                     $XStep       = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     $X           = $this->GraphAreaY1 + $XMargin;
                     $SerieOffset = isset($Serie["XOffset"]) ? $Serie["XOffset"] : 0;

                     if ($Type == BOUND_MAX || $Type == BOUND_BOTH) {
                         if ($MaxLabelPos == BOUND_LABEL_POS_TOP    || ($MaxLabelPos ==  BOUND_LABEL_POS_AUTO && $MaxValue >= 0)) {
                             $YPos  = $PosArray[$MaxPos] + $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_MIDDLELEFT;
                         }
                         if ($MaxLabelPos == BOUND_LABEL_POS_BOTTOM || ($MaxLabelPos ==  BOUND_LABEL_POS_AUTO && $MaxValue < 0)) {
                             $YPos  = $PosArray[$MaxPos] - $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_MIDDLERIGHT;
                         }

                         $XPos  = $X + $MaxPos*$XStep + $SerieOffset;
                         $Label = $MaxLabelTxt.$this->scaleFormat($MaxValue, $Mode, $Format, $Unit);

                         $TxtPos  = $this->getTextBox($YPos, $XPos, $this->FontName, $this->FontSize, 0, $Label);
                         $XOffset = 0;
                         $YOffset = 0;
                         if ($TxtPos[0]["X"] < $this->GraphAreaX1) {
                             $XOffset = $this->GraphAreaX1 - $TxtPos[0]["X"];
                         }
                         if ($TxtPos[1]["X"] > $this->GraphAreaX2) {
                             $XOffset = -($TxtPos[1]["X"] - $this->GraphAreaX2);
                         }
                         if ($TxtPos[2]["Y"] < $this->GraphAreaY1) {
                             $YOffset = ($this->GraphAreaY1 - $TxtPos[2]["Y"])/2;
                         }
                         if ($TxtPos[0]["Y"] > $this->GraphAreaY2) {
                             $YOffset = -(($TxtPos[0]["Y"] - $this->GraphAreaY2)/2);
                         }

                         $CaptionSettings["R"] = $MaxDisplayR;
                         $CaptionSettings["G"] = $MaxDisplayG;
                         $CaptionSettings["B"] = $MaxDisplayB;
                         $CaptionSettings["Align"] = $Align;

                         $this->drawText($YPos+$XOffset, $XPos+$YOffset, $Label, $CaptionSettings);
                     }

                     if ($Type == BOUND_MIN || $Type == BOUND_BOTH) {
                         if ($MinLabelPos == BOUND_LABEL_POS_TOP    || ($MinLabelPos ==  BOUND_LABEL_POS_AUTO && $MinValue >= 0)) {
                             $YPos  = $PosArray[$MinPos] + $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_MIDDLELEFT;
                         }
                         if ($MinLabelPos == BOUND_LABEL_POS_BOTTOM || ($MinLabelPos ==  BOUND_LABEL_POS_AUTO && $MinValue < 0)) {
                             $YPos  = $PosArray[$MinPos] - $DisplayOffset + 2;
                             $Align = TEXT_ALIGN_MIDDLERIGHT;
                         }

                         $XPos  = $X + $MinPos*$XStep + $SerieOffset;
                         $Label = $MinLabelTxt.$this->scaleFormat($MinValue, $Mode, $Format, $Unit);

                         $TxtPos  = $this->getTextBox($YPos, $XPos, $this->FontName, $this->FontSize, 0, $Label);
                         $XOffset = 0;
                         $YOffset = 0;
                         if ($TxtPos[0]["X"] < $this->GraphAreaX1) {
                             $XOffset = $this->GraphAreaX1 - $TxtPos[0]["X"];
                         }
                         if ($TxtPos[1]["X"] > $this->GraphAreaX2) {
                             $XOffset = -($TxtPos[1]["X"] - $this->GraphAreaX2);
                         }
                         if ($TxtPos[2]["Y"] < $this->GraphAreaY1) {
                             $YOffset = ($this->GraphAreaY1 - $TxtPos[2]["Y"])/2;
                         }
                         if ($TxtPos[0]["Y"] > $this->GraphAreaY2) {
                             $YOffset = -(($TxtPos[0]["Y"] - $this->GraphAreaY2)/2);
                         }

                         $CaptionSettings["R"] = $MinDisplayR;
                         $CaptionSettings["G"] = $MinDisplayG;
                         $CaptionSettings["B"] = $MinDisplayB;
                         $CaptionSettings["Align"] = $Align;

                         $this->drawText($YPos+$XOffset, $XPos+$YOffset, $Label, $CaptionSettings);
                     }
                 }
             }
         }
     }

     /* Draw a plot chart */
     public function drawPlotChart($Format=null)
     {
         $PlotSize		= isset($Format["PlotSize"]) ? $Format["PlotSize"] : null;
         $PlotBorder	= isset($Format["PlotBorder"]) ? $Format["PlotBorder"] : false;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : 50;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : 50;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : 50;
         $BorderAlpha	= isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : 30;
         $BorderSize	= isset($Format["BorderSize"]) ? $Format["BorderSize"] : 2;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 4;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $RecordImageMap	= isset($Format["RecordImageMap"]) ? $Format["RecordImageMap"] : false;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 if (isset($Serie["Weight"])) {
                     $SerieWeight = $Serie["Weight"] + 2;
                 } else {
                     $SerieWeight = 2;
                 }
                 if ($PlotSize != null) {
                     $SerieWeight = $PlotSize;
                 }

                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($Surrounding != null) {
                     $BorderR = $R + $Surrounding;
                     $BorderG = $G + $Surrounding;
                     $BorderB = $B + $Surrounding;
                 }
                 if (isset($Serie["Picture"])) {
                     $Picture = $Serie["Picture"];
                     list($PicWidth, $PicHeight, $PicType) = $this->getPicInfo($Picture);
                 } else {
                     $Picture = null;
                     $PicOffset = 0;
                 }

                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Shape		= $Serie["Shape"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 if (isset($Serie["Description"])) {
                     $SerieDescription = $Serie["Description"];
                 } else {
                     $SerieDescription = $SerieName;
                 }

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     if ($Picture != null) {
                         $PicOffset = $PicHeight / 2;
                         $SerieWeight = 0;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $Y) {
                         if ($DisplayValues) {
                             $this->drawText($X, $Y-$DisplayOffset-$SerieWeight-$BorderSize-$PicOffset, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }

                         if ($Y != VOID) {
                             if ($RecordImageMap) {
                                 $this->addToImageMap("CIRCLE", floor($X).",".floor($Y).",".$SerieWeight, $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }

                             if ($Picture != null) {
                                 $this->drawFromPicture($PicType, $Picture, $X-$PicWidth/2, $Y-$PicHeight/2);
                             } else {
                                 $this->drawShape($X, $Y, $Shape, $SerieWeight, $PlotBorder, $BorderSize, $R, $G, $B, $Alpha, $BorderR, $BorderG, $BorderB, $BorderAlpha);
                             }
                         }
                         $X = $X + $XStep;
                     }
                 } else {
                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     if ($Picture != null) {
                         $PicOffset = $PicWidth / 2;
                         $SerieWeight = 0;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $X) {
                         if ($DisplayValues) {
                             $this->drawText($X+$DisplayOffset+$SerieWeight+$BorderSize+$PicOffset, $Y, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("Angle"=>270,"R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }

                         if ($X != VOID) {
                             if ($RecordImageMap) {
                                 $this->addToImageMap("CIRCLE", floor($X).",".floor($Y).",".$SerieWeight, $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }

                             if ($Picture != null) {
                                 $this->drawFromPicture($PicType, $Picture, $X-$PicWidth/2, $Y-$PicHeight/2);
                             } else {
                                 $this->drawShape($X, $Y, $Shape, $SerieWeight, $PlotBorder, $BorderSize, $R, $G, $B, $Alpha, $BorderR, $BorderG, $BorderB, $BorderAlpha);
                             }
                         }
                         $Y = $Y + $YStep;
                     }
                 }
             }
         }
     }

     /* Draw a spline chart */
     public function drawSplineChart($Format=null)
     {
         $BreakVoid		= isset($Format["BreakVoid"]) ? $Format["BreakVoid"] : true;
         $VoidTicks		= isset($Format["VoidTicks"]) ? $Format["VoidTicks"] : 4;
         $BreakR		= isset($Format["BreakR"]) ? $Format["BreakR"] : null; // 234
     $BreakG		= isset($Format["BreakG"]) ? $Format["BreakG"] : null; // 55
     $BreakB		= isset($Format["BreakB"]) ? $Format["BreakB"] : null; // 26
     $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $RecordImageMap	= isset($Format["RecordImageMap"]) ? $Format["RecordImageMap"] : false;
         $ImageMapPlotSize  = isset($Format["ImageMapPlotSize"]) ? $Format["ImageMapPlotSize"] : 5;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 $Weight = $Serie["Weight"];

                 if ($BreakR == null) {
                     $BreakSettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$VoidTicks);
                 } else {
                     $BreakSettings = array("R"=>$BreakR,"G"=>$BreakG,"B"=>$BreakB,"Alpha"=>$Alpha,"Ticks"=>$VoidTicks,"Weight"=>$Weight);
                 }

                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 if (isset($Serie["Description"])) {
                     $SerieDescription = $Serie["Description"];
                 } else {
                     $SerieDescription = $SerieName;
                 }

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X     = $this->GraphAreaX1 + $XMargin;
                     $WayPoints = "";
                     $Force = $XStep / 5;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     $LastX = 1;
                     $LastY = 1;
                     foreach ($PosArray as $Key => $Y) {
                         if ($DisplayValues) {
                             $this->drawText($X, $Y-$DisplayOffset, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }
    
                         if ($RecordImageMap && $Y != VOID) {
                             $this->addToImageMap("CIRCLE", floor($X).",".floor($Y).",".$ImageMapPlotSize, $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                         }

                         if ($Y == VOID && $LastY != null) {
                             $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));
                             $WayPoints = "";
                         }

                         if ($Y != VOID && $LastY == null && $LastGoodY != null && !$BreakVoid) {
                             $this->drawLine($LastGoodX, $LastGoodY, $X, $Y, $BreakSettings);
                         }

                         if ($Y != VOID) {
                             $WayPoints[] = array($X,$Y);
                         }

                         if ($Y != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($Y == VOID) {
                             $Y = null;
                         }

                         $LastX = $X;
                         $LastY = $Y;
                         $X = $X + $XStep;
                     }
                     $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));
                 } else {
                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y     = $this->GraphAreaY1 + $XMargin;
                     $WayPoints = "";
                     $Force = $YStep / 5;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     $LastX = 1;
                     $LastY = 1;
                     foreach ($PosArray as $Key => $X) {
                         if ($DisplayValues) {
                             $this->drawText($X+$DisplayOffset, $Y, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("Angle"=>270,"R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }

                         if ($RecordImageMap && $X != VOID) {
                             $this->addToImageMap("CIRCLE", floor($X).",".floor($Y).",".$ImageMapPlotSize, $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                         }

                         if ($X == VOID && $LastX != null) {
                             $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));
                             $WayPoints = "";
                         }

                         if ($X != VOID && $LastX == null && $LastGoodX != null && !$BreakVoid) {
                             $this->drawLine($LastGoodX, $LastGoodY, $X, $Y, $BreakSettings);
                         }

                         if ($X != VOID) {
                             $WayPoints[] = array($X,$Y);
                         }

                         if ($X != VOID) {
                             $LastGoodX = $X;
                             $LastGoodY = $Y;
                         }
                         if ($X == VOID) {
                             $X = null;
                         }

                         $LastX = $X;
                         $LastY = $Y;
                         $Y = $Y + $YStep;
                     }
                     $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));
                 }
             }
         }
     }

     /* Draw a filled spline chart */
     public function drawFilledSplineChart($Format=null)
     {
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $AroundZero	= isset($Format["AroundZero"]) ? $Format["AroundZero"] : true;
         $Threshold		= isset($Format["Threshold"]) ? $Format["Threshold"] : null;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));
                 if ($AroundZero) {
                     $YZero = $this->scaleComputeY(0, array("AxisID"=>$Serie["Axis"]));
                 }

                 if ($Threshold != null) {
                     foreach ($Threshold as $Key => $Params) {
                         $Threshold[$Key]["MinX"] = $this->scaleComputeY($Params["Min"], array("AxisID"=>$Serie["Axis"]));
                         $Threshold[$Key]["MaxX"] = $this->scaleComputeY($Params["Max"], array("AxisID"=>$Serie["Axis"]));
                     }
                 }

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X     = $this->GraphAreaX1 + $XMargin;
                     $WayPoints = "";
                     $Force = $XStep / 5;

                     if (!$AroundZero) {
                         $YZero = $this->GraphAreaY2-1;
                     }
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }
                     if ($YZero < $this->GraphAreaY1+1) {
                         $YZero = $this->GraphAreaY1+1;
                     }

                     $LastX = "";
                     $LastY = "";
                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $Y) {
                         if ($DisplayValues) {
                             $this->drawText($X, $Y-$DisplayOffset, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }

                         if ($Y == VOID) {
                             $Area = $this->drawSpline($WayPoints, array("Force"=>$Force,"PathOnly"=>true));

                             if ($Area != "") {
                                 foreach ($Area as $key => $Points) {
                                     $Corners = "";
                                     $Corners[] = $Area[$key][0]["X"];
                                     $Corners[] = $YZero;
                                     foreach ($Points as $subKey => $Point) {
                                         if ($subKey == count($Points)-1) {
                                             $Corners[] = $Point["X"]-1;
                                         } else {
                                             $Corners[] = $Point["X"];
                                         }
                                         $Corners[] = $Point["Y"]+1;
                                     }
                                     $Corners[] = $Points[$subKey]["X"]-1;
                                     $Corners[] = $YZero;

                                     $this->drawPolygonChart($Corners, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/2,"NoBorder"=>true,"Threshold"=>$Threshold));
                                 }
                                 $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                             }

                             $WayPoints = "";
                         } else {
                             $WayPoints[] = array($X,$Y-.5);
                         } /* -.5 for AA visual fix */

                         $X = $X + $XStep;
                     }
                     $Area = $this->drawSpline($WayPoints, array("Force"=>$Force,"PathOnly"=>true));

                     if ($Area != "") {
                         foreach ($Area as $key => $Points) {
                             $Corners = "";
                             $Corners[] = $Area[$key][0]["X"];
                             $Corners[] = $YZero;
                             foreach ($Points as $subKey => $Point) {
                                 if ($subKey == count($Points)-1) {
                                     $Corners[] = $Point["X"]-1;
                                 } else {
                                     $Corners[] = $Point["X"];
                                 }
                                 $Corners[] = $Point["Y"]+1;
                             }
                             $Corners[] = $Points[$subKey]["X"]-1;
                             $Corners[] = $YZero;

                             $this->drawPolygonChart($Corners, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/2,"NoBorder"=>true,"Threshold"=>$Threshold));
                         }
                         $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                     }
                 } else {
                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y     = $this->GraphAreaY1 + $XMargin;
                     $WayPoints = "";
                     $Force = $YStep / 5;

                     if (!$AroundZero) {
                         $YZero = $this->GraphAreaX1+1;
                     }
                     if ($YZero > $this->GraphAreaX2-1) {
                         $YZero = $this->GraphAreaX2-1;
                     }
                     if ($YZero < $this->GraphAreaX1+1) {
                         $YZero = $this->GraphAreaX1+1;
                     }

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $X) {
                         if ($DisplayValues) {
                             $this->drawText($X+$DisplayOffset, $Y, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("Angle"=>270,"R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }

                         if ($X == VOID) {
                             $Area = $this->drawSpline($WayPoints, array("Force"=>$Force,"PathOnly"=>true));

                             if ($Area != "") {
                                 foreach ($Area as $key => $Points) {
                                     $Corners = "";
                                     $Corners[] = $YZero;
                                     $Corners[] = $Area[$key][0]["Y"];
                                     foreach ($Points as $subKey => $Point) {
                                         if ($subKey == count($Points)-1) {
                                             $Corners[] = $Point["X"]-1;
                                         } else {
                                             $Corners[] = $Point["X"];
                                         }
                                         $Corners[] = $Point["Y"];
                                     }
                                     $Corners[] = $YZero;
                                     $Corners[] = $Points[$subKey]["Y"]-1;

                                     $this->drawPolygonChart($Corners, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/2,"NoBorder"=>true,"Threshold"=>$Threshold));
                                 }
                                 $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                             }

                             $WayPoints = "";
                         } else {
                             $WayPoints[] = array($X,$Y);
                         }

                         $Y = $Y + $YStep;
                     }
                     $Area = $this->drawSpline($WayPoints, array("Force"=>$Force,"PathOnly"=>true));

                     if ($Area != "") {
                         foreach ($Area as $key => $Points) {
                             $Corners = "";
                             $Corners[] = $YZero;
                             $Corners[] = $Area[$key][0]["Y"];
                             foreach ($Points as $subKey => $Point) {
                                 if ($subKey == count($Points)-1) {
                                     $Corners[] = $Point["X"]-1;
                                 } else {
                                     $Corners[] = $Point["X"];
                                 }
                                 $Corners[] = $Point["Y"];
                             }
                             $Corners[] = $YZero;
                             $Corners[] = $Points[$subKey]["Y"]-1;

                             $this->drawPolygonChart($Corners, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha/2,"NoBorder"=>true,"Threshold"=>$Threshold));
                         }
                         $this->drawSpline($WayPoints, array("Force"=>$Force,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks));
                     }
                 }
             }
         }
     }

     /* Draw a line chart */
     public function drawLineChart($Format=null)
     {
         $BreakVoid		= isset($Format["BreakVoid"]) ? $Format["BreakVoid"] : true;
         $VoidTicks		= isset($Format["VoidTicks"]) ? $Format["VoidTicks"] : 4;
         $BreakR		= isset($Format["BreakR"]) ? $Format["BreakR"] : null;
         $BreakG		= isset($Format["BreakG"]) ? $Format["BreakG"] : null;
         $BreakB		= isset($Format["BreakB"]) ? $Format["BreakB"] : null;
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $RecordImageMap	= isset($Format["RecordImageMap"]) ? $Format["RecordImageMap"] : false;
         $ImageMapPlotSize  = isset($Format["ImageMapPlotSize"]) ? $Format["ImageMapPlotSize"] : 5;
         $ForceColor	= isset($Format["ForceColor"]) ? $Format["ForceColor"] : false;
         $ForceR		= isset($Format["ForceR"]) ? $Format["ForceR"] : 0;
         $ForceG		= isset($Format["ForceG"]) ? $Format["ForceG"] : 0;
         $ForceB		= isset($Format["ForceB"]) ? $Format["ForceB"] : 0;
         $ForceAlpha	= isset($Format["ForceAlpha"]) ? $Format["ForceAlpha"] : 100;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 $Weight = $Serie["Weight"];

                 if ($ForceColor) {
                     $R = $ForceR;
                     $G = $ForceG;
                     $B = $ForceB;
                     $Alpha = $ForceAlpha;
                 }

                 if ($BreakR == null) {
                     $BreakSettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$VoidTicks,"Weight"=>$Weight);
                 } else {
                     $BreakSettings = array("R"=>$BreakR,"G"=>$BreakG,"B"=>$BreakB,"Alpha"=>$Alpha,"Ticks"=>$VoidTicks,"Weight"=>$Weight);
                 }

                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 if (isset($Serie["Description"])) {
                     $SerieDescription = $Serie["Description"];
                 } else {
                     $SerieDescription = $SerieName;
                 }

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     foreach ($PosArray as $Key => $Y) {
                         if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                             if ($Serie["Data"][$Key] > 0) {
                                 $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                                 $Offset = $DisplayOffset;
                             } else {
                                 $Align = TEXT_ALIGN_TOPMIDDLE;
                                 $Offset = -$DisplayOffset;
                             }
                             $this->drawText($X, $Y-$Offset-$Weight, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align));
                         }

                         if ($RecordImageMap && $Y != VOID) {
                             $this->addToImageMap("CIRCLE", floor($X).",".floor($Y).",".$ImageMapPlotSize, $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                         }

                         if ($Y != VOID && $LastX != null && $LastY != null) {
                             $this->drawLine($LastX, $LastY, $X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));
                         }

                         if ($Y != VOID && $LastY == null && $LastGoodY != null && !$BreakVoid) {
                             $this->drawLine($LastGoodX, $LastGoodY, $X, $Y, $BreakSettings);
                             $LastGoodY = null;
                         }

                         if ($Y != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($Y == VOID) {
                             $Y = null;
                         }

                         $LastX = $X;
                         $LastY = $Y;
                         $X = $X + $XStep;
                     }
                 } else {
                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     foreach ($PosArray as $Key => $X) {
                         if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                             $this->drawText($X+$DisplayOffset+$Weight, $Y, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("Angle"=>270,"R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
                         }

                         if ($RecordImageMap && $X != VOID) {
                             $this->addToImageMap("CIRCLE", floor($X).",".floor($Y).",".$ImageMapPlotSize, $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                         }

                         if ($X != VOID && $LastX != null && $LastY != null) {
                             $this->drawLine($LastX, $LastY, $X, $Y, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight));
                         }

                         if ($X != VOID && $LastX == null && $LastGoodY != null && !$BreakVoid) {
                             $this->drawLine($LastGoodX, $LastGoodY, $X, $Y, $BreakSettings);
                             $LastGoodY = null;
                         }

                         if ($X != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($X == VOID) {
                             $X = null;
                         }

                         $LastX = $X;
                         $LastY = $Y;
                         $Y = $Y + $YStep;
                     }
                 }
             }
         }
     }

     /* Draw a line chart */
     public function drawZoneChart($SerieA, $SerieB, $Format=null)
     {
         $AxisID	= isset($Format["AxisID"]) ? $Format["AxisID"] : 0;
         $LineR	= isset($Format["LineR"]) ? $Format["LineR"] : 150;
         $LineG	= isset($Format["LineG"]) ? $Format["LineG"] : 150;
         $LineB	= isset($Format["LineB"]) ? $Format["LineB"] : 150;
         $LineAlpha	= isset($Format["LineAlpha"]) ? $Format["LineAlpha"] : 50;
         $LineTicks	= isset($Format["LineTicks"]) ? $Format["LineTicks"] : 1;
         $AreaR	= isset($Format["AreaR"]) ? $Format["AreaR"] : 150;
         $AreaG	= isset($Format["AreaG"]) ? $Format["AreaG"] : 150;
         $AreaB	= isset($Format["AreaB"]) ? $Format["AreaB"] : 150;
         $AreaAlpha	= isset($Format["AreaAlpha"]) ? $Format["AreaAlpha"] : 5;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data	 = $this->DataSet->getData();
         if (!isset($Data["Series"][$SerieA]["Data"]) || !isset($Data["Series"][$SerieB]["Data"])) {
             return(0);
         }
         $SerieAData = $Data["Series"][$SerieA]["Data"];
         $SerieBData = $Data["Series"][$SerieB]["Data"];

         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         $Mode	= $Data["Axis"][$AxisID]["Display"];
         $Format	= $Data["Axis"][$AxisID]["Format"];
         $Unit	= $Data["Axis"][$AxisID]["Unit"];

         $PosArrayA = $this->scaleComputeY($SerieAData, array("AxisID"=>$AxisID));
         $PosArrayB = $this->scaleComputeY($SerieBData, array("AxisID"=>$AxisID));
         if (count($PosArrayA) != count($PosArrayB)) {
             return(0);
         }

         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             if ($XDivs == 0) {
                 $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
             } else {
                 $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
             }
             $X = $this->GraphAreaX1 + $XMargin;
             $LastX = null;
             $LastY = null;

             $LastX = null;
             $LastY1 = null;
             $LastY2 = null;
             $BoundsA = "";
             $BoundsB = "";
             foreach ($PosArrayA as $Key => $Y1) {
                 $Y2 = $PosArrayB[$Key];

                 $BoundsA[] = $X;
                 $BoundsA[] = $Y1;
                 $BoundsB[] = $X;
                 $BoundsB[] = $Y2;

                 $LastX = $X;
                 $LastY1 = $Y1;
                 $LastY2 = $Y2;

                 $X = $X + $XStep;
             }
             $Bounds = array_merge($BoundsA, $this->reversePlots($BoundsB));
             $this->drawPolygonChart($Bounds, array("R"=>$AreaR,"G"=>$AreaG,"B"=>$AreaB,"Alpha"=>$AreaAlpha));

             for ($i=0;$i<=count($BoundsA)-4;$i=$i+2) {
                 $this->drawLine($BoundsA[$i], $BoundsA[$i+1], $BoundsA[$i+2], $BoundsA[$i+3], array("R"=>$LineR,"G"=>$LineG,"B"=>$LineB,"Alpha"=>$LineAlpha,"Ticks"=>$LineTicks));
                 $this->drawLine($BoundsB[$i], $BoundsB[$i+1], $BoundsB[$i+2], $BoundsB[$i+3], array("R"=>$LineR,"G"=>$LineG,"B"=>$LineB,"Alpha"=>$LineAlpha,"Ticks"=>$LineTicks));
             }
         } else {
             if ($XDivs == 0) {
                 $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
             } else {
                 $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
             }
             $Y = $this->GraphAreaY1 + $XMargin;
             $LastX = null;
             $LastY = null;

             $LastY = null;
             $LastX1 = null;
             $LastX2 = null;
             $BoundsA = "";
             $BoundsB = "";
             foreach ($PosArrayA as $Key => $X1) {
                 $X2 = $PosArrayB[$Key];

                 $BoundsA[] = $X1;
                 $BoundsA[] = $Y;
                 $BoundsB[] = $X2;
                 $BoundsB[] = $Y;

                 $LastY = $Y;
                 $LastX1 = $X1;
                 $LastX2 = $X2;

                 $Y = $Y + $YStep;
             }
             $Bounds = array_merge($BoundsA, $this->reversePlots($BoundsB));
             $this->drawPolygonChart($Bounds, array("R"=>$AreaR,"G"=>$AreaG,"B"=>$AreaB,"Alpha"=>$AreaAlpha));

             for ($i=0;$i<=count($BoundsA)-4;$i=$i+2) {
                 $this->drawLine($BoundsA[$i], $BoundsA[$i+1], $BoundsA[$i+2], $BoundsA[$i+3], array("R"=>$LineR,"G"=>$LineG,"B"=>$LineB,"Alpha"=>$LineAlpha,"Ticks"=>$LineTicks));
                 $this->drawLine($BoundsB[$i], $BoundsB[$i+1], $BoundsB[$i+2], $BoundsB[$i+3], array("R"=>$LineR,"G"=>$LineG,"B"=>$LineB,"Alpha"=>$LineAlpha,"Ticks"=>$LineTicks));
             }
         }
     }

     /* Draw a step chart */
     public function drawStepChart($Format=null)
     {
         $BreakVoid		= isset($Format["BreakVoid"]) ? $Format["BreakVoid"] : false;
         $ReCenter		= isset($Format["ReCenter"]) ? $Format["ReCenter"] : true;
         $VoidTicks		= isset($Format["VoidTicks"]) ? $Format["VoidTicks"] : 4;
         $BreakR		= isset($Format["BreakR"]) ? $Format["BreakR"] : null;
         $BreakG		= isset($Format["BreakG"]) ? $Format["BreakG"] : null;
         $BreakB		= isset($Format["BreakB"]) ? $Format["BreakB"] : null;
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] :false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $RecordImageMap	= isset($Format["RecordImageMap"]) ? $Format["RecordImageMap"] : false;
         $ImageMapPlotSize  = isset($Format["ImageMapPlotSize"]) ? $Format["ImageMapPlotSize"] : 5;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 $Weight = $Serie["Weight"];

                 if (isset($Serie["Description"])) {
                     $SerieDescription = $Serie["Description"];
                 } else {
                     $SerieDescription = $SerieName;
                 }

                 if ($BreakR == null) {
                     $BreakSettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$VoidTicks,"Weight"=>$Weight);
                 } else {
                     $BreakSettings = array("R"=>$BreakR,"G"=>$BreakG,"B"=>$BreakB,"Alpha"=>$Alpha,"Ticks"=>$VoidTicks,"Weight"=>$Weight);
                 }

                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];
                 $Color		= array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight);

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     $Init = false;
                     foreach ($PosArray as $Key => $Y) {
                         if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                             if ($Y <= $LastY) {
                                 $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                                 $Offset = $DisplayOffset;
                             } else {
                                 $Align = TEXT_ALIGN_TOPMIDDLE;
                                 $Offset = -$DisplayOffset;
                             }
                             $this->drawText($X, $Y-$Offset-$Weight, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align));
                         }

                         if ($Y != VOID && $LastX != null && $LastY != null) {
                             $this->drawLine($LastX, $LastY, $X, $LastY, $Color);
                             $this->drawLine($X, $LastY, $X, $Y, $Color);
                             if ($ReCenter && $X+$XStep < $this->GraphAreaX2 - $XMargin) {
                                 $this->drawLine($X, $Y, $X+$XStep, $Y, $Color);
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($X-$ImageMapPlotSize).",".floor($Y-$ImageMapPlotSize).",".floor($X+$XStep+$ImageMapPlotSize).",".floor($Y+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }
                             } else {
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($LastX-$ImageMapPlotSize).",".floor($LastY-$ImageMapPlotSize).",".floor($X+$ImageMapPlotSize).",".floor($LastY+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }
                             }
                         }

                         if ($Y != VOID && $LastY == null && $LastGoodY != null && !$BreakVoid) {
                             if ($ReCenter) {
                                 $this->drawLine($LastGoodX+$XStep, $LastGoodY, $X, $LastGoodY, $BreakSettings);
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($LastGoodX+$XStep-$ImageMapPlotSize).",".floor($LastGoodY-$ImageMapPlotSize).",".floor($X+$ImageMapPlotSize).",".floor($LastGoodY+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }
                             } else {
                                 $this->drawLine($LastGoodX, $LastGoodY, $X, $LastGoodY, $BreakSettings);
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($LastGoodX-$ImageMapPlotSize).",".floor($LastGoodY-$ImageMapPlotSize).",".floor($X+$ImageMapPlotSize).",".floor($LastGoodY+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }
                             }

                             $this->drawLine($X, $LastGoodY, $X, $Y, $BreakSettings);
                             $LastGoodY = null;
                         } elseif (!$BreakVoid && $LastGoodY == null && $Y != VOID) {
                             $this->drawLine($this->GraphAreaX1 + $XMargin, $Y, $X, $Y, $BreakSettings);
                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($this->GraphAreaX1+$XMargin-$ImageMapPlotSize).",".floor($Y-$ImageMapPlotSize).",".floor($X+$ImageMapPlotSize).",".floor($Y+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }
                         }

                         if ($Y != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($Y == VOID) {
                             $Y = null;
                         }

                         if (!$Init && $ReCenter) {
                             $X = $X - $XStep/2;
                             $Init = true;
                         }
                         $LastX = $X;
                         $LastY = $Y;
                         if ($LastX < $this->GraphAreaX1 + $XMargin) {
                             $LastX = $this->GraphAreaX1 + $XMargin;
                         }
                         $X = $X + $XStep;
                     }
                     if ($ReCenter) {
                         $this->drawLine($LastX, $LastY, $this->GraphAreaX2 - $XMargin, $LastY, $Color);
                         if ($RecordImageMap) {
                             $this->addToImageMap("RECT", floor($LastX-$ImageMapPlotSize).",".floor($LastY-$ImageMapPlotSize).",".floor($this->GraphAreaX2-$XMargin+$ImageMapPlotSize).",".floor($LastY+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                         }
                     }
                 } else {
                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     $Init = false;
                     foreach ($PosArray as $Key => $X) {
                         if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                             if ($X >= $LastX) {
                                 $Align = TEXT_ALIGN_MIDDLELEFT;
                                 $Offset = $DisplayOffset;
                             } else {
                                 $Align = TEXT_ALIGN_MIDDLERIGHT;
                                 $Offset = -$DisplayOffset;
                             }
                             $this->drawText($X+$Offset+$Weight, $Y, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align));
                         }

                         if ($X != VOID && $LastX != null && $LastY != null) {
                             $this->drawLine($LastX, $LastY, $LastX, $Y, $Color);
                             $this->drawLine($LastX, $Y, $X, $Y, $Color);

                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($LastX-$ImageMapPlotSize).",".floor($LastY-$ImageMapPlotSize).",".floor($LastX+$XStep+$ImageMapPlotSize).",".floor($Y+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }
                         }

                         if ($X != VOID && $LastX == null && $LastGoodY != null && !$BreakVoid) {
                             $this->drawLine($LastGoodX, $LastGoodY, $LastGoodX, $LastGoodY+$YStep, $Color);
                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($LastGoodX-$ImageMapPlotSize).",".floor($LastGoodY-$ImageMapPlotSize).",".floor($LastGoodX+$ImageMapPlotSize).",".floor($LastGoodY+$YStep+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }

                             $this->drawLine($LastGoodX, $LastGoodY+$YStep, $LastGoodX, $Y, $BreakSettings);
                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($LastGoodX-$ImageMapPlotSize).",".floor($LastGoodY+$YStep-$ImageMapPlotSize).",".floor($LastGoodX+$ImageMapPlotSize).",".floor($YStep+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }

                             $this->drawLine($LastGoodX, $Y, $X, $Y, $BreakSettings);
                             $LastGoodY = null;
                         } elseif ($X != VOID && $LastGoodY == null && !$BreakVoid) {
                             $this->drawLine($X, $this->GraphAreaY1 + $XMargin, $X, $Y, $BreakSettings);
                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($X-$ImageMapPlotSize).",".floor($this->GraphAreaY1+$XMargin-$ImageMapPlotSize).",".floor($X+$ImageMapPlotSize).",".floor($Y+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }
                         }

                         if ($X != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($X == VOID) {
                             $X = null;
                         }

                         if (!$Init && $ReCenter) {
                             $Y = $Y - $YStep/2;
                             $Init = true;
                         }
                         $LastX = $X;
                         $LastY = $Y;
                         if ($LastY < $this->GraphAreaY1 + $XMargin) {
                             $LastY = $this->GraphAreaY1 + $XMargin;
                         }
                         $Y = $Y + $YStep;
                     }
                     if ($ReCenter) {
                         $this->drawLine($LastX, $LastY, $LastX, $this->GraphAreaY2 - $XMargin, $Color);
                         if ($RecordImageMap) {
                             $this->addToImageMap("RECT", floor($LastX-$ImageMapPlotSize).",".floor($LastY-$ImageMapPlotSize).",".floor($LastX+$ImageMapPlotSize).",".floor($this->GraphAreaY2-$XMargin+$ImageMapPlotSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                         }
                     }
                 }
             }
         }
     }

     /* Draw a step chart */
     public function drawFilledStepChart($Format=null)
     {
         $ReCenter		= isset($Format["ReCenter"]) ? $Format["ReCenter"] : true;
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] :false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $ForceTransparency	= isset($Format["ForceTransparency"]) ? $Format["ForceTransparency"] : null;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $AroundZero	= isset($Format["AroundZero"]) ? $Format["AroundZero"] : true;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 $Weight = $Serie["Weight"];

                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 $Color		= array("R"=>$R,"G"=>$G,"B"=>$B);
                 if ($ForceTransparency != null) {
                     $Color["Alpha"] = $ForceTransparency;
                 } else {
                     $Color["Alpha"] = $Alpha;
                 }

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));
                 $YZero    = $this->scaleComputeY(0, array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }
                     if ($YZero < $this->GraphAreaY1+1) {
                         $YZero = $this->GraphAreaY1+1;
                     }

                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!$AroundZero) {
                         $YZero = $this->GraphAreaY2-1;
                     }

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     $Points = "";
                     $Init = false;
                     foreach ($PosArray as $Key => $Y) {
                         if ($Y == VOID && $LastX != null && $LastY != null && $Points !="") {
                             $Points[] = $LastX;
                             $Points[] = $LastY;
                             $Points[] = $X;
                             $Points[] = $LastY;
                             $Points[] = $X;
                             $Points[] = $YZero;
                             $this->drawPolygon($Points, $Color);
                             $Points = "";
                         }

                         if ($Y != VOID && $LastX != null && $LastY != null) {
                             if ($Points == "") {
                                 $Points[] = $LastX;
                                 $Points[] = $YZero;
                             }
                             $Points[] = $LastX;
                             $Points[] = $LastY;
                             $Points[] = $X;
                             $Points[] = $LastY;
                             $Points[] = $X;
                             $Points[] = $Y;
                         }

                         if ($Y != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($Y == VOID) {
                             $Y = null;
                         }

                         if (!$Init && $ReCenter) {
                             $X = $X - $XStep/2;
                             $Init = true;
                         }
                         $LastX = $X;
                         $LastY = $Y;
                         if ($LastX < $this->GraphAreaX1 + $XMargin) {
                             $LastX = $this->GraphAreaX1 + $XMargin;
                         }
                         $X = $X + $XStep;
                     }

                     if ($ReCenter) {
                         $Points[] = $LastX+$XStep/2;
                         $Points[] = $LastY;
                         $Points[] = $LastX+$XStep/2;
                         $Points[] = $YZero;
                     } else {
                         $Points[] = $LastX;
                         $Points[] = $YZero;
                     }

                     $this->drawPolygon($Points, $Color);
                 } else {
                     if ($YZero < $this->GraphAreaX1+1) {
                         $YZero = $this->GraphAreaX1+1;
                     }
                     if ($YZero > $this->GraphAreaX2-1) {
                         $YZero = $this->GraphAreaX2-1;
                     }

                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $LastGoodY = null;
                     $LastGoodX = null;
                     $Points = "";
                     foreach ($PosArray as $Key => $X) {
                         if ($X == VOID && $LastX != null && $LastY != null && $Points !="") {
                             $Points[] = $LastX;
                             $Points[] = $LastY;
                             $Points[] = $LastX;
                             $Points[] = $Y;
                             $Points[] = $YZero;
                             $Points[] = $Y;
                             $this->drawPolygon($Points, $Color);
                             $Points = "";
                         }

                         if ($X != VOID && $LastX != null && $LastY != null) {
                             if ($Points == "") {
                                 $Points[] = $YZero;
                                 $Points[] = $LastY;
                             }
                             $Points[] = $LastX;
                             $Points[] = $LastY;
                             $Points[] = $LastX;
                             $Points[] = $Y;
                             $Points[] = $X;
                             $Points[] = $Y;
                         }

                         if ($X != VOID) {
                             $LastGoodY = $Y;
                             $LastGoodX = $X;
                         }
                         if ($X == VOID) {
                             $X = null;
                         }

                         if ($LastX == null && $ReCenter) {
                             $Y = $Y - $YStep/2;
                         }
                         $LastX = $X;
                         $LastY = $Y;
                         if ($LastY < $this->GraphAreaY1 + $XMargin) {
                             $LastY = $this->GraphAreaY1 + $XMargin;
                         }
                         $Y = $Y + $YStep;
                     }

                     if ($ReCenter) {
                         $Points[] = $LastX;
                         $Points[] = $LastY+$YStep/2;
                         $Points[] = $YZero;
                         $Points[] = $LastY+$YStep/2;
                     } else {
                         $Points[] = $YZero;
                         $Points[] = $LastY;
                     }

                     $this->drawPolygon($Points, $Color);
                 }
             }
         }
     }

     /* Draw an area chart */
     public function drawAreaChart($Format=null)
     {
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $ForceTransparency	= isset($Format["ForceTransparency"]) ? $Format["ForceTransparency"] : 25;
         $AroundZero	= isset($Format["AroundZero"]) ? $Format["AroundZero"] : true;
         $Threshold		= isset($Format["Threshold"]) ? $Format["Threshold"] : null;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data  = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));
                 $YZero    = $this->scaleComputeY(0, array("AxisID"=>$Serie["Axis"]));

                 if ($Threshold != null) {
                     foreach ($Threshold as $Key => $Params) {
                         $Threshold[$Key]["MinX"] = $this->scaleComputeY($Params["Min"], array("AxisID"=>$Serie["Axis"]));
                         $Threshold[$Key]["MaxX"] = $this->scaleComputeY($Params["Max"], array("AxisID"=>$Serie["Axis"]));
                     }
                 }

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }

                     $Areas = "";
                     $AreaID = 0;
                     $Areas[$AreaID][] = $this->GraphAreaX1 + $XMargin;
                     if ($AroundZero) {
                         $Areas[$AreaID][] = $YZero;
                     } else {
                         $Areas[$AreaID][] = $this->GraphAreaY2-1;
                     }

                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $Y) {
                         if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                             if ($Serie["Data"][$Key] > 0) {
                                 $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                                 $Offset = $DisplayOffset;
                             } else {
                                 $Align = TEXT_ALIGN_TOPMIDDLE;
                                 $Offset = -$DisplayOffset;
                             }
                             $this->drawText($X, $Y-$Offset, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align));
                         }

                         if ($Y == VOID && isset($Areas[$AreaID])) {
                             if ($LastX == null) {
                                 $Areas[$AreaID][] = $X;
                             } else {
                                 $Areas[$AreaID][] = $LastX;
                             }

                             if ($AroundZero) {
                                 $Areas[$AreaID][] = $YZero;
                             } else {
                                 $Areas[$AreaID][] = $this->GraphAreaY2-1;
                             }
                             $AreaID++;
                         } elseif ($Y != VOID) {
                             if (!isset($Areas[$AreaID])) {
                                 $Areas[$AreaID][] = $X;
                                 if ($AroundZero) {
                                     $Areas[$AreaID][] = $YZero;
                                 } else {
                                     $Areas[$AreaID][] = $this->GraphAreaY2-1;
                                 }
                             }

                             $Areas[$AreaID][] = $X;
                             $Areas[$AreaID][] = $Y;
                         }

                         $LastX = $X;
                         $X = $X + $XStep;
                     }
                     $Areas[$AreaID][] = $LastX;
                     if ($AroundZero) {
                         $Areas[$AreaID][] = $YZero;
                     } else {
                         $Areas[$AreaID][] = $this->GraphAreaY2-1;
                     }

                     /* Handle shadows in the areas */
                     if ($this->Shadow) {
                         $ShadowArea = "";
                         foreach ($Areas as $Key => $Points) {
                             $ShadowArea[$Key] = "";
                             foreach ($Points as $Key2 => $Value) {
                                 if ($Key2 % 2 == 0) {
                                     $ShadowArea[$Key][] = $Value + $this->ShadowX;
                                 } else {
                                     $ShadowArea[$Key][] = $Value + $this->ShadowY;
                                 }
                             }
                         }

                         foreach ($ShadowArea as $Key => $Points) {
                             $this->drawPolygonChart($Points, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa));
                         }
                     }

                     $Alpha = $ForceTransparency != null ? $ForceTransparency : $Alpha;
                     $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Threshold"=>$Threshold);

                     foreach ($Areas as $Key => $Points) {
                         $this->drawPolygonChart($Points, $Color);
                     }
                 } else {
                     if ($YZero < $this->GraphAreaX1+1) {
                         $YZero = $this->GraphAreaX1+1;
                     }
                     if ($YZero > $this->GraphAreaX2-1) {
                         $YZero = $this->GraphAreaX2-1;
                     }

                     $Areas = "";
                     $AreaID = 0;
                     if ($AroundZero) {
                         $Areas[$AreaID][] = $YZero;
                     } else {
                         $Areas[$AreaID][] = $this->GraphAreaX1+1;
                     }
                     $Areas[$AreaID][] = $this->GraphAreaY1 + $XMargin;

                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y     = $this->GraphAreaY1 + $XMargin;
                     $LastX = null;
                     $LastY = null;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $X) {
                         if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                             if ($Serie["Data"][$Key] > 0) {
                                 $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                                 $Offset = $DisplayOffset;
                             } else {
                                 $Align = TEXT_ALIGN_TOPMIDDLE;
                                 $Offset = -$DisplayOffset;
                             }
                             $this->drawText($X+$Offset, $Y, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("Angle"=>270,"R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align));
                         }

                         if ($X == VOID && isset($Areas[$AreaID])) {
                             if ($AroundZero) {
                                 $Areas[$AreaID][] = $YZero;
                             } else {
                                 $Areas[$AreaID][] = $this->GraphAreaX1+1;
                             }

                             if ($LastY == null) {
                                 $Areas[$AreaID][] = $Y;
                             } else {
                                 $Areas[$AreaID][] = $LastY;
                             }

                             $AreaID++;
                         } elseif ($X != VOID) {
                             if (!isset($Areas[$AreaID])) {
                                 if ($AroundZero) {
                                     $Areas[$AreaID][] = $YZero;
                                 } else {
                                     $Areas[$AreaID][] = $this->GraphAreaX1+1;
                                 }
                                 $Areas[$AreaID][] = $Y;
                             }

                             $Areas[$AreaID][] = $X;
                             $Areas[$AreaID][] = $Y;
                         }

                         $LastX = $X;
                         $LastY = $Y;
                         $Y = $Y + $YStep;
                     }
                     if ($AroundZero) {
                         $Areas[$AreaID][] = $YZero;
                     } else {
                         $Areas[$AreaID][] = $this->GraphAreaX1+1;
                     }
                     $Areas[$AreaID][] = $LastY;

                     /* Handle shadows in the areas */
                     if ($this->Shadow) {
                         $ShadowArea = "";
                         foreach ($Areas as $Key => $Points) {
                             $ShadowArea[$Key] = "";
                             foreach ($Points as $Key2 => $Value) {
                                 if ($Key2 % 2 == 0) {
                                     $ShadowArea[$Key][] = $Value + $this->ShadowX;
                                 } else {
                                     $ShadowArea[$Key][] = $Value + $this->ShadowY;
                                 }
                             }
                         }

                         foreach ($ShadowArea as $Key => $Points) {
                             $this->drawPolygonChart($Points, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa));
                         }
                     }

                     $Alpha = $ForceTransparency != null ? $ForceTransparency : $Alpha;
                     $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Threshold"=>$Threshold);

                     foreach ($Areas as $Key => $Points) {
                         $this->drawPolygonChart($Points, $Color);
                     }
                 }
             }
         }
     }


     /* Draw a bar chart */
     public function drawBarChart($Format=null)
     {
         $Floating0Serie	= isset($Format["Floating0Serie"]) ? $Format["Floating0Serie"] : null;
         $Floating0Value	= isset($Format["Floating0Value"]) ? $Format["Floating0Value"] : null;
         $Draw0Line		= isset($Format["Draw0Line"]) ? $Format["Draw0Line"] : false;
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOrientation = isset($Format["DisplayOrientation"]) ? $Format["DisplayOrientation"] : ORIENTATION_HORIZONTAL;
         $DisplayOffset	= isset($Format["DisplayOffset"]) ? $Format["DisplayOffset"] : 2;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayFont	= isset($Format["DisplaySize"]) ? $Format["DisplaySize"] : $this->FontName;
         $DisplaySize	= isset($Format["DisplaySize"]) ? $Format["DisplaySize"] : $this->FontSize;
         $DisplayPos	= isset($Format["DisplayPos"]) ? $Format["DisplayPos"] : LABEL_POS_OUTSIDE;
         $DisplayShadow	= isset($Format["DisplayShadow"]) ? $Format["DisplayShadow"] : true;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $AroundZero	= isset($Format["AroundZero"]) ? $Format["AroundZero"] : true;
         $Interleave	= isset($Format["Interleave"]) ? $Format["Interleave"] : .5;
         $Rounded		= isset($Format["Rounded"]) ? $Format["Rounded"] : false;
         $RoundRadius	= isset($Format["RoundRadius"]) ? $Format["RoundRadius"] : 4;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : -1;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : -1;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : -1;
         $Gradient		= isset($Format["Gradient"]) ? $Format["Gradient"] : false;
         $GradientMode	= isset($Format["GradientMode"]) ? $Format["GradientMode"] : GRADIENT_SIMPLE;
         $GradientAlpha	= isset($Format["GradientAlpha"]) ? $Format["GradientAlpha"] : 20;
         $GradientStartR	= isset($Format["GradientStartR"]) ? $Format["GradientStartR"] : 255;
         $GradientStartG	= isset($Format["GradientStartG"]) ? $Format["GradientStartG"] : 255;
         $GradientStartB	= isset($Format["GradientStartB"]) ? $Format["GradientStartB"] : 255;
         $GradientEndR	= isset($Format["GradientEndR"]) ? $Format["GradientEndR"] : 0;
         $GradientEndG	= isset($Format["GradientEndG"]) ? $Format["GradientEndG"] : 0;
         $GradientEndB	= isset($Format["GradientEndB"]) ? $Format["GradientEndB"] : 0;
         $TxtMargin		= isset($Format["TxtMargin"]) ? $Format["TxtMargin"] : 6;
         $OverrideColors	= isset($Format["OverrideColors"]) ? $Format["OverrideColors"] : null;
         $OverrideSurrounding = isset($Format["OverrideSurrounding"]) ? $Format["OverrideSurrounding"] : 30;
         $InnerSurrounding	= isset($Format["InnerSurrounding"]) ? $Format["InnerSurrounding"] : null;
         $InnerBorderR	= isset($Format["InnerBorderR"]) ? $Format["InnerBorderR"] : -1;
         $InnerBorderG	= isset($Format["InnerBorderG"]) ? $Format["InnerBorderG"] : -1;
         $InnerBorderB	= isset($Format["InnerBorderB"]) ? $Format["InnerBorderB"] : -1;
         $RecordImageMap	= isset($Format["RecordImageMap"]) ? $Format["RecordImageMap"] : false;

         $this->LastChartLayout = CHART_LAST_LAYOUT_REGULAR;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         if ($OverrideColors != null) {
             $OverrideColors = $this->validatePalette($OverrideColors, $OverrideSurrounding);
             $this->DataSet->saveExtendedData("Palette", $OverrideColors);
         }

         $RestoreShadow = $this->Shadow;

         $SeriesCount  = $this->countDrawableSeries();
         $CurrentSerie = 0;
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = $R;
                     $DisplayG = $G;
                     $DisplayB = $B;
                 }
                 if ($Surrounding != null) {
                     $BorderR = $R+$Surrounding;
                     $BorderG = $G+$Surrounding;
                     $BorderB = $B+$Surrounding;
                 }
                 if ($InnerSurrounding != null) {
                     $InnerBorderR = $R+$InnerSurrounding;
                     $InnerBorderG = $G+$InnerSurrounding;
                     $InnerBorderB = $B+$InnerSurrounding;
                 }
                 if ($InnerBorderR == -1) {
                     $InnerColor = null;
                 } else {
                     $InnerColor = array("R"=>$InnerBorderR,"G"=>$InnerBorderG,"B"=>$InnerBorderB);
                 }
                 $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"BorderR"=>$BorderR,"BorderG"=>$BorderG,"BorderB"=>$BorderB);

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 if (isset($Serie["Description"])) {
                     $SerieDescription = $Serie["Description"];
                 } else {
                     $SerieDescription = $SerieName;
                 }

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 if ($Floating0Value != null) {
                     $YZero = $this->scaleComputeY($Floating0Value, array("AxisID"=>$Serie["Axis"]));
                 } else {
                     $YZero = $this->scaleComputeY(0, array("AxisID"=>$Serie["Axis"]));
                 }

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }
                     if ($YZero < $this->GraphAreaY1+1) {
                         $YZero = $this->GraphAreaY1+1;
                     }

                     if ($XDivs == 0) {
                         $XStep = 0;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;

                     if ($AroundZero) {
                         $Y1 = $YZero;
                     } else {
                         $Y1 = $this->GraphAreaY2-1;
                     }
                     if ($XDivs == 0) {
                         $XSize = ($this->GraphAreaX2-$this->GraphAreaX1)/($SeriesCount+$Interleave);
                     } else {
                         $XSize   = ($XStep / ($SeriesCount+$Interleave));
                     }

                     $XOffset = -($XSize*$SeriesCount)/2 + $CurrentSerie * $XSize;
                     if ($X + $XOffset <= $this->GraphAreaX1) {
                         $XOffset = $this->GraphAreaX1 - $X + 1 ;
                     }

                     $this->DataSet->Data["Series"][$SerieName]["XOffset"] = $XOffset + $XSize / 2;

                     if ($Rounded || $BorderR != -1) {
                         $XSpace = 1;
                     } else {
                         $XSpace = 0;
                     }

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }

                     $ID = 0;
                     foreach ($PosArray as $Key => $Y2) {
                         if ($Floating0Serie != null) {
                             if (isset($Data["Series"][$Floating0Serie]["Data"][$Key])) {
                                 $Value = $Data["Series"][$Floating0Serie]["Data"][$Key];
                             } else {
                                 $Value = 0;
                             }

                             $YZero = $this->scaleComputeY($Value, array("AxisID"=>$Serie["Axis"]));
                             if ($YZero > $this->GraphAreaY2-1) {
                                 $YZero = $this->GraphAreaY2-1;
                             }
                             if ($YZero < $this->GraphAreaY1+1) {
                                 $YZero = $this->GraphAreaY1+1;
                             }

                             if ($AroundZero) {
                                 $Y1 = $YZero;
                             } else {
                                 $Y1 = $this->GraphAreaY2-1;
                             }
                         }

                         if ($OverrideColors != null) {
                             if (isset($OverrideColors[$ID])) {
                                 $Color = array("R"=>$OverrideColors[$ID]["R"],"G"=>$OverrideColors[$ID]["G"],"B"=>$OverrideColors[$ID]["B"],"Alpha"=>$OverrideColors[$ID]["Alpha"],"BorderR"=>$OverrideColors[$ID]["BorderR"],"BorderG"=>$OverrideColors[$ID]["BorderG"],"BorderB"=>$OverrideColors[$ID]["BorderB"]);
                             } else {
                                 $Color = $this->getRandomColor();
                             }
                         }

                         if ($Y2 != VOID) {
                             $BarHeight = $Y1 - $Y2;

                             if ($Serie["Data"][$Key] == 0) {
                                 $this->drawLine($X+$XOffset+$XSpace, $Y1, $X+$XOffset+$XSize-$XSpace, $Y1, $Color);
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($X+$XOffset+$XSpace).",".floor($Y1-1).",".floor($X+$XOffset+$XSize-$XSpace).",".floor($Y1+1), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }
                             } else {
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($X+$XOffset+$XSpace).",".floor($Y1).",".floor($X+$XOffset+$XSize-$XSpace).",".floor($Y2), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }

                                 if ($Rounded) {
                                     $this->drawRoundedFilledRectangle($X+$XOffset+$XSpace, $Y1, $X+$XOffset+$XSize-$XSpace, $Y2, $RoundRadius, $Color);
                                 } else {
                                     $this->drawFilledRectangle($X+$XOffset+$XSpace, $Y1, $X+$XOffset+$XSize-$XSpace, $Y2, $Color);

                                     if ($InnerColor != null) {
                                         $this->drawRectangle($X+$XOffset+$XSpace+1, min($Y1, $Y2)+1, $X+$XOffset+$XSize-$XSpace-1, max($Y1, $Y2)-1, $InnerColor);
                                     }

                                     if ($Gradient) {
                                         $this->Shadow  = false;

                                         if ($GradientMode == GRADIENT_SIMPLE) {
                                             if ($Serie["Data"][$Key] >= 0) {
                                                 $GradienColor = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                             } else {
                                                 $GradienColor = array("StartR"=>$GradientEndR,"StartG"=>$GradientEndG,"StartB"=>$GradientEndB,"EndR"=>$GradientStartR,"EndG"=>$GradientStartG,"EndB"=>$GradientStartB,"Alpha"=>$GradientAlpha);
                                             }

                                             $this->drawGradientArea($X+$XOffset+$XSpace, $Y1, $X+$XOffset+$XSize-$XSpace, $Y2, DIRECTION_VERTICAL, $GradienColor);
                                         } elseif ($GradientMode == GRADIENT_EFFECT_CAN) {
                                             $GradienColor1 = array("StartR"=>$GradientEndR,"StartG"=>$GradientEndG,"StartB"=>$GradientEndB,"EndR"=>$GradientStartR,"EndG"=>$GradientStartG,"EndB"=>$GradientStartB,"Alpha"=>$GradientAlpha);
                                             $GradienColor2 = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                             $XSpan = floor($XSize / 3);

                                             $this->drawGradientArea($X+$XOffset+$XSpace, $Y1, $X+$XOffset+$XSpan-$XSpace, $Y2, DIRECTION_HORIZONTAL, $GradienColor1);
                                             $this->drawGradientArea($X+$XOffset+$XSpan+$XSpace, $Y1, $X+$XOffset+$XSize-$XSpace, $Y2, DIRECTION_HORIZONTAL, $GradienColor2);
                                         }
                                         $this->Shadow = $RestoreShadow;
                                     }
                                 }

                                 if ($Draw0Line) {
                                     $Line0Color = array("R"=>0,"G"=>0,"B"=>0,"Alpha"=>20);

                                     if (abs($Y1 - $Y2) > 3) {
                                         $Line0Width = 3;
                                     } else {
                                         $Line0Width = 1;
                                     }
                                     if ($Y1 - $Y2 < 0) {
                                         $Line0Width = -$Line0Width;
                                     }

                                     $this->drawFilledRectangle($X+$XOffset+$XSpace, floor($Y1), $X+$XOffset+$XSize-$XSpace, floor($Y1)-$Line0Width, $Line0Color);
                                     $this->drawLine($X+$XOffset+$XSpace, floor($Y1), $X+$XOffset+$XSize-$XSpace, floor($Y1), $Line0Color);
                                 }
                             }

                             if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                                 if ($DisplayShadow) {
                                     $this->Shadow = true;
                                 }

                                 $Caption    = $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit);
                                 $TxtPos     = $this->getTextBox(0, 0, $DisplayFont, $DisplaySize, 90, $Caption);
                                 $TxtHeight  = $TxtPos[0]["Y"] - $TxtPos[1]["Y"] + $TxtMargin;

                                 if ($DisplayPos == LABEL_POS_INSIDE && abs($TxtHeight) < abs($BarHeight)) {
                                     $CenterX = (($X+$XOffset+$XSize-$XSpace)-($X+$XOffset+$XSpace))/2 + $X+$XOffset+$XSpace;
                                     $CenterY = ($Y2-$Y1)/2 + $Y1;

                                     $this->drawText($CenterX, $CenterY, $Caption, array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"FontSize"=>$DisplaySize,"Angle"=>90));
                                 } else {
                                     if ($Serie["Data"][$Key] >= 0) {
                                         $Align = TEXT_ALIGN_BOTTOMMIDDLE;
                                         $Offset = $DisplayOffset;
                                     } else {
                                         $Align = TEXT_ALIGN_TOPMIDDLE;
                                         $Offset = -$DisplayOffset;
                                     }
                                     $this->drawText($X+$XOffset+$XSize/2, $Y2-$Offset, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align,"FontSize"=>$DisplaySize));
                                 }

                                 $this->Shadow = $RestoreShadow;
                             }
                         }

                         $X = $X + $XStep;
                         $ID++;
                     }
                 } else {
                     if ($YZero < $this->GraphAreaX1+1) {
                         $YZero = $this->GraphAreaX1+1;
                     }
                     if ($YZero > $this->GraphAreaX2-1) {
                         $YZero = $this->GraphAreaX2-1;
                     }

                     if ($XDivs == 0) {
                         $YStep = 0;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
           
                     $Y = $this->GraphAreaY1 + $XMargin;

                     if ($AroundZero) {
                         $X1 = $YZero;
                     } else {
                         $X1 = $this->GraphAreaX1+1;
                     }
                     if ($XDivs == 0) {
                         $YSize = ($this->GraphAreaY2-$this->GraphAreaY1)/($SeriesCount+$Interleave);
                     } else {
                         $YSize   = ($YStep / ($SeriesCount+$Interleave));
                     }
           
                     $YOffset = -($YSize*$SeriesCount)/2 + $CurrentSerie * $YSize;
                     if ($Y + $YOffset <= $this->GraphAreaY1) {
                         $YOffset = $this->GraphAreaY1 - $Y + 1 ;
                     }

                     $this->DataSet->Data["Series"][$SerieName]["XOffset"] = $YOffset + $YSize / 2;

                     if ($Rounded || $BorderR != -1) {
                         $YSpace = 1;
                     } else {
                         $YSpace = 0;
                     }

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }

                     $ID = 0 ;
                     foreach ($PosArray as $Key => $X2) {
                         if ($Floating0Serie != null) {
                             if (isset($Data["Series"][$Floating0Serie]["Data"][$Key])) {
                                 $Value = $Data["Series"][$Floating0Serie]["Data"][$Key];
                             } else {
                                 $Value = 0;
                             }

                             $YZero = $this->scaleComputeY($Value, array("AxisID"=>$Serie["Axis"]));
                             if ($YZero < $this->GraphAreaX1+1) {
                                 $YZero = $this->GraphAreaX1+1;
                             }
                             if ($YZero > $this->GraphAreaX2-1) {
                                 $YZero = $this->GraphAreaX2-1;
                             }
                             if ($AroundZero) {
                                 $X1 = $YZero;
                             } else {
                                 $X1 = $this->GraphAreaX1+1;
                             }
                         }

                         if ($OverrideColors != null) {
                             if (isset($OverrideColors[$ID])) {
                                 $Color = array("R"=>$OverrideColors[$ID]["R"],"G"=>$OverrideColors[$ID]["G"],"B"=>$OverrideColors[$ID]["B"],"Alpha"=>$OverrideColors[$ID]["Alpha"],"BorderR"=>$OverrideColors[$ID]["BorderR"],"BorderG"=>$OverrideColors[$ID]["BorderG"],"BorderB"=>$OverrideColors[$ID]["BorderB"]);
                             } else {
                                 $Color = $this->getRandomColor();
                             }
                         }

                         if ($X2 != VOID) {
                             $BarWidth = $X2 - $X1;

                             if ($Serie["Data"][$Key] == 0) {
                                 $this->drawLine($X1, $Y+$YOffset+$YSpace, $X1, $Y+$YOffset+$YSize-$YSpace, $Color);
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($X1-1).",".floor($Y+$YOffset+$YSpace).",".floor($X1+1).",".floor($Y+$YOffset+$YSize-$YSpace), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }
                             } else {
                                 if ($RecordImageMap) {
                                     $this->addToImageMap("RECT", floor($X1).",".floor($Y+$YOffset+$YSpace).",".floor($X2).",".floor($Y+$YOffset+$YSize-$YSpace), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                                 }

                                 if ($Rounded) {
                                     $this->drawRoundedFilledRectangle($X1+1, $Y+$YOffset+$YSpace, $X2, $Y+$YOffset+$YSize-$YSpace, $RoundRadius, $Color);
                                 } else {
                                     $this->drawFilledRectangle($X1, $Y+$YOffset+$YSpace, $X2, $Y+$YOffset+$YSize-$YSpace, $Color);

                                     if ($InnerColor != null) {
                                         $this->drawRectangle(min($X1, $X2)+1, $Y+$YOffset+$YSpace+1, max($X1, $X2)-1, $Y+$YOffset+$YSize-$YSpace-1, $InnerColor);
                                     }

                                     if ($Gradient) {
                                         $this->Shadow  = false;

                                         if ($GradientMode == GRADIENT_SIMPLE) {
                                             if ($Serie["Data"][$Key] >= 0) {
                                                 $GradienColor = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                             } else {
                                                 $GradienColor = array("StartR"=>$GradientEndR,"StartG"=>$GradientEndG,"StartB"=>$GradientEndB,"EndR"=>$GradientStartR,"EndG"=>$GradientStartG,"EndB"=>$GradientStartB,"Alpha"=>$GradientAlpha);
                                             }

                                             $this->drawGradientArea($X1, $Y+$YOffset+$YSpace, $X2, $Y+$YOffset+$YSize-$YSpace, DIRECTION_HORIZONTAL, $GradienColor);
                                         } elseif ($GradientMode == GRADIENT_EFFECT_CAN) {
                                             $GradienColor1 = array("StartR"=>$GradientEndR,"StartG"=>$GradientEndG,"StartB"=>$GradientEndB,"EndR"=>$GradientStartR,"EndG"=>$GradientStartG,"EndB"=>$GradientStartB,"Alpha"=>$GradientAlpha);
                                             $GradienColor2 = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                             $YSpan = floor($YSize / 3);

                                             $this->drawGradientArea($X1, $Y+$YOffset+$YSpace, $X2, $Y+$YOffset+$YSpan-$YSpace, DIRECTION_VERTICAL, $GradienColor1);
                                             $this->drawGradientArea($X1, $Y+$YOffset+$YSpan, $X2, $Y+$YOffset+$YSize-$YSpace, DIRECTION_VERTICAL, $GradienColor2);
                                         }
                                         $this->Shadow = $RestoreShadow;
                                     }
                                 }

                                 if ($Draw0Line) {
                                     $Line0Color = array("R"=>0,"G"=>0,"B"=>0,"Alpha"=>20);

                                     if (abs($X1 - $X2) > 3) {
                                         $Line0Width = 3;
                                     } else {
                                         $Line0Width = 1;
                                     }
                                     if ($X2 - $X1 < 0) {
                                         $Line0Width = -$Line0Width;
                                     }

                                     $this->drawFilledRectangle(floor($X1), $Y+$YOffset+$YSpace, floor($X1)+$Line0Width, $Y+$YOffset+$YSize-$YSpace, $Line0Color);
                                     $this->drawLine(floor($X1), $Y+$YOffset+$YSpace, floor($X1), $Y+$YOffset+$YSize-$YSpace, $Line0Color);
                                 }
                             }

                             if ($DisplayValues && $Serie["Data"][$Key] != VOID) {
                                 if ($DisplayShadow) {
                                     $this->Shadow = true;
                                 }

                                 $Caption   = $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit);
                                 $TxtPos    = $this->getTextBox(0, 0, $DisplayFont, $DisplaySize, 0, $Caption);
                                 $TxtWidth  = $TxtPos[1]["X"] - $TxtPos[0]["X"] + $TxtMargin;

                                 if ($DisplayPos == LABEL_POS_INSIDE && abs($TxtWidth) < abs($BarWidth)) {
                                     $CenterX = ($X2-$X1)/2 + $X1;
                                     $CenterY = (($Y+$YOffset+$YSize-$YSpace)-($Y+$YOffset+$YSpace))/2 + ($Y+$YOffset+$YSpace);

                                     $this->drawText($CenterX, $CenterY, $Caption, array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"FontSize"=>$DisplaySize));
                                 } else {
                                     if ($Serie["Data"][$Key] >= 0) {
                                         $Align = TEXT_ALIGN_MIDDLELEFT;
                                         $Offset = $DisplayOffset;
                                     } else {
                                         $Align = TEXT_ALIGN_MIDDLERIGHT;
                                         $Offset = -$DisplayOffset;
                                     }
                                     $this->drawText($X2+$Offset, $Y+$YOffset+$YSize/2, $Caption, array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>$Align,"FontSize"=>$DisplaySize));
                                 }

                                 $this->Shadow = $RestoreShadow;
                             }
                         }
                         $Y = $Y + $YStep;
                         $ID++;
                     }
                 }
                 $CurrentSerie++;
             }
         }
     }

     /* Draw a bar chart */
     public function drawStackedBarChart($Format=null)
     {
         $DisplayValues	= isset($Format["DisplayValues"]) ? $Format["DisplayValues"] : false;
         $DisplayOrientation = isset($Format["DisplayOrientation"]) ? $Format["DisplayOrientation"] : ORIENTATION_AUTO;
         $DisplayRound      = isset($Format["DisplayRound"]) ? $Format["DisplayRound"] : 0;
         $DisplayColor	= isset($Format["DisplayColor"]) ? $Format["DisplayColor"] : DISPLAY_MANUAL;
         $DisplayFont	= isset($Format["DisplayFont"]) ? $Format["DisplayFont"] : $this->FontName;
         $DisplaySize	= isset($Format["DisplaySize"]) ? $Format["DisplaySize"] : $this->FontSize;
         $DisplayR		= isset($Format["DisplayR"]) ? $Format["DisplayR"] : 0;
         $DisplayG		= isset($Format["DisplayG"]) ? $Format["DisplayG"] : 0;
         $DisplayB		= isset($Format["DisplayB"]) ? $Format["DisplayB"] : 0;
         $Interleave	= isset($Format["Interleave"]) ? $Format["Interleave"] : .5;
         $Rounded		= isset($Format["Rounded"]) ? $Format["Rounded"] : false;
         $RoundRadius	= isset($Format["RoundRadius"]) ? $Format["RoundRadius"] : 4;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : -1;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : -1;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : -1;
         $Gradient		= isset($Format["Gradient"]) ? $Format["Gradient"] : false;
         $GradientMode	= isset($Format["GradientMode"]) ? $Format["GradientMode"] : GRADIENT_SIMPLE;
         $GradientAlpha	= isset($Format["GradientAlpha"]) ? $Format["GradientAlpha"] : 20;
         $GradientStartR	= isset($Format["GradientStartR"]) ? $Format["GradientStartR"] : 255;
         $GradientStartG	= isset($Format["GradientStartG"]) ? $Format["GradientStartG"] : 255;
         $GradientStartB	= isset($Format["GradientStartB"]) ? $Format["GradientStartB"] : 255;
         $GradientEndR	= isset($Format["GradientEndR"]) ? $Format["GradientEndR"] : 0;
         $GradientEndG	= isset($Format["GradientEndG"]) ? $Format["GradientEndG"] : 0;
         $GradientEndB	= isset($Format["GradientEndB"]) ? $Format["GradientEndB"] : 0;
         $InnerSurrounding	= isset($Format["InnerSurrounding"]) ? $Format["InnerSurrounding"] : null;
         $InnerBorderR	= isset($Format["InnerBorderR"]) ? $Format["InnerBorderR"] : -1;
         $InnerBorderG	= isset($Format["InnerBorderG"]) ? $Format["InnerBorderG"] : -1;
         $InnerBorderB	= isset($Format["InnerBorderB"]) ? $Format["InnerBorderB"] : -1;
         $RecordImageMap	= isset($Format["RecordImageMap"]) ? $Format["RecordImageMap"] : false;
         $FontFactor	= isset($Format["FontFactor"]) ? $Format["FontFactor"] : 8;

         $this->LastChartLayout = CHART_LAST_LAYOUT_STACKED;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         $RestoreShadow = $this->Shadow;

         $LastX = "";
         $LastY = "";
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($DisplayColor == DISPLAY_AUTO) {
                     $DisplayR = 255;
                     $DisplayG = 255;
                     $DisplayB = 255;
                 }
                 if ($Surrounding != null) {
                     $BorderR = $R+$Surrounding;
                     $BorderG = $G+$Surrounding;
                     $BorderB = $B+$Surrounding;
                 }
                 if ($InnerSurrounding != null) {
                     $InnerBorderR = $R+$InnerSurrounding;
                     $InnerBorderG = $G+$InnerSurrounding;
                     $InnerBorderB = $B+$InnerSurrounding;
                 }
                 if ($InnerBorderR == -1) {
                     $InnerColor = null;
                 } else {
                     $InnerColor = array("R"=>$InnerBorderR,"G"=>$InnerBorderG,"B"=>$InnerBorderB);
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 if (isset($Serie["Description"])) {
                     $SerieDescription = $Serie["Description"];
                 } else {
                     $SerieDescription = $SerieName;
                 }

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]), true);
                 $YZero    = $this->scaleComputeY(0, array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 $Color = array("TransCorner"=>true,"R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"BorderR"=>$BorderR,"BorderG"=>$BorderG,"BorderB"=>$BorderB);

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }

                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X     = $this->GraphAreaX1 + $XMargin;

                     $XSize   = ($XStep / (1+$Interleave));
                     $XOffset = -($XSize/2);

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $Height) {
                         if ($Height != VOID && $Serie["Data"][$Key] != 0) {
                             if ($Serie["Data"][$Key] > 0) {
                                 $Pos = "+";
                             } else {
                                 $Pos = "-";
                             }

                             if (!isset($LastY[$Key])) {
                                 $LastY[$Key] = "";
                             }
                             if (!isset($LastY[$Key][$Pos])) {
                                 $LastY[$Key][$Pos] = $YZero;
                             }

                             $Y1 = $LastY[$Key][$Pos];
                             $Y2 = $Y1 - $Height;

                             if (($Rounded || $BorderR != -1) && ($Pos == "+" && $Y1 != $YZero)) {
                                 $YSpaceUp = 1;
                             } else {
                                 $YSpaceUp = 0;
                             }
                             if (($Rounded || $BorderR != -1) && ($Pos == "-" && $Y1 != $YZero)) {
                                 $YSpaceDown = 1;
                             } else {
                                 $YSpaceDown = 0;
                             }

                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($X+$XOffset).",".floor($Y1-$YSpaceUp+$YSpaceDown).",".floor($X+$XOffset+$XSize).",".floor($Y2), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }

                             if ($Rounded) {
                                 $this->drawRoundedFilledRectangle($X+$XOffset, $Y1-$YSpaceUp+$YSpaceDown, $X+$XOffset+$XSize, $Y2, $RoundRadius, $Color);
                             } else {
                                 $this->drawFilledRectangle($X+$XOffset, $Y1-$YSpaceUp+$YSpaceDown, $X+$XOffset+$XSize, $Y2, $Color);

                                 if ($InnerColor != null) {
                                     $RestoreShadow = $this->Shadow;
                                     $this->Shadow = false;
                                     $this->drawRectangle(min($X+$XOffset+1, $X+$XOffset+$XSize), min($Y1-$YSpaceUp+$YSpaceDown, $Y2)+1, max($X+$XOffset+1, $X+$XOffset+$XSize)-1, max($Y1-$YSpaceUp+$YSpaceDown, $Y2)-1, $InnerColor);
                                     $this->Shadow = $RestoreShadow;
                                 }

                                 if ($Gradient) {
                                     $this->Shadow  = false;

                                     if ($GradientMode == GRADIENT_SIMPLE) {
                                         $GradientColor = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                         $this->drawGradientArea($X+$XOffset, $Y1-1-$YSpaceUp+$YSpaceDown, $X+$XOffset+$XSize, $Y2+1, DIRECTION_VERTICAL, $GradientColor);
                                     } elseif ($GradientMode == GRADIENT_EFFECT_CAN) {
                                         $GradientColor1 = array("StartR"=>$GradientEndR,"StartG"=>$GradientEndG,"StartB"=>$GradientEndB,"EndR"=>$GradientStartR,"EndG"=>$GradientStartG,"EndB"=>$GradientStartB,"Alpha"=>$GradientAlpha);
                                         $GradientColor2 = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                         $XSpan = floor($XSize / 3);

                                         $this->drawGradientArea($X+$XOffset-.5, $Y1-.5-$YSpaceUp+$YSpaceDown, $X+$XOffset+$XSpan, $Y2+.5, DIRECTION_HORIZONTAL, $GradientColor1);
                                         $this->drawGradientArea($X+$XSpan+$XOffset-.5, $Y1-.5-$YSpaceUp+$YSpaceDown, $X+$XOffset+$XSize, $Y2+.5, DIRECTION_HORIZONTAL, $GradientColor2);
                                     }
                                     $this->Shadow = $RestoreShadow;
                                 }
                             }

                             if ($DisplayValues) {
                                 $BarHeight = abs($Y2-$Y1)-2;
                                 $BarWidth  = $XSize+($XOffset/2)-$FontFactor;

                                 $Caption   = $this->scaleFormat(round($Serie["Data"][$Key], $DisplayRound), $Mode, $Format, $Unit);
                                 $TxtPos    = $this->getTextBox(0, 0, $DisplayFont, $DisplaySize, 0, $Caption);
                                 $TxtHeight = abs($TxtPos[2]["Y"] - $TxtPos[0]["Y"]);
                                 $TxtWidth  = abs($TxtPos[1]["X"] - $TxtPos[0]["X"]);

                                 $XCenter = (($X+$XOffset+$XSize) - ($X+$XOffset)) / 2 + $X+$XOffset;
                                 $YCenter = (($Y2) - ($Y1-$YSpaceUp+$YSpaceDown)) / 2 + $Y1-$YSpaceUp+$YSpaceDown;

                                 $Done = false;
                                 if ($DisplayOrientation == ORIENTATION_HORIZONTAL || $DisplayOrientation == ORIENTATION_AUTO) {
                                     if ($TxtHeight < $BarHeight && $TxtWidth < $BarWidth) {
                                         $this->drawText($XCenter, $YCenter, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"FontSize"=>$DisplaySize,"FontName"=>$DisplayFont));
                                         $Done = true;
                                     }
                                 }

                                 if ($DisplayOrientation == ORIENTATION_VERTICAL || ($DisplayOrientation == ORIENTATION_AUTO && !$Done)) {
                                     if ($TxtHeight < $BarWidth && $TxtWidth < $BarHeight) {
                                         $this->drawText($XCenter, $YCenter, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Angle"=>90,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"FontSize"=>$DisplaySize,"FontName"=>$DisplayFont));
                                     }
                                 }
                             }

                             $LastY[$Key][$Pos] = $Y2;
                         }

                         $X = $X + $XStep;
                     }
                 } else {
                     if ($YZero < $this->GraphAreaX1+1) {
                         $YZero = $this->GraphAreaX1+1;
                     }
                     if ($YZero > $this->GraphAreaX2-1) {
                         $YZero = $this->GraphAreaX2-1;
                     }

                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y     = $this->GraphAreaY1 + $XMargin;

                     $YSize   = $YStep / (1+$Interleave);
                     $YOffset = -($YSize/2);

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     foreach ($PosArray as $Key => $Width) {
                         if ($Width != VOID && $Serie["Data"][$Key] != 0) {
                             if ($Serie["Data"][$Key] > 0) {
                                 $Pos = "+";
                             } else {
                                 $Pos = "-";
                             }

                             if (!isset($LastX[$Key])) {
                                 $LastX[$Key] = "";
                             }
                             if (!isset($LastX[$Key][$Pos])) {
                                 $LastX[$Key][$Pos] = $YZero;
                             }

                             $X1 = $LastX[$Key][$Pos];
                             $X2 = $X1 + $Width;

                             if (($Rounded || $BorderR != -1) && ($Pos == "+" && $X1 != $YZero)) {
                                 $XSpaceLeft = 2;
                             } else {
                                 $XSpaceLeft = 0;
                             }
                             if (($Rounded || $BorderR != -1) && ($Pos == "-" && $X1 != $YZero)) {
                                 $XSpaceRight = 2;
                             } else {
                                 $XSpaceRight = 0;
                             }

                             if ($RecordImageMap) {
                                 $this->addToImageMap("RECT", floor($X1+$XSpaceLeft).",".floor($Y+$YOffset).",".floor($X2-$XSpaceRight).",".floor($Y+$YOffset+$YSize), $this->toHTMLColor($R, $G, $B), $SerieDescription, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit));
                             }

                             if ($Rounded) {
                                 $this->drawRoundedFilledRectangle($X1+$XSpaceLeft, $Y+$YOffset, $X2-$XSpaceRight, $Y+$YOffset+$YSize, $RoundRadius, $Color);
                             } else {
                                 $this->drawFilledRectangle($X1+$XSpaceLeft, $Y+$YOffset, $X2-$XSpaceRight, $Y+$YOffset+$YSize, $Color);

                                 if ($InnerColor != null) {
                                     $RestoreShadow = $this->Shadow;
                                     $this->Shadow = false;
                                     $this->drawRectangle(min($X1+$XSpaceLeft, $X2-$XSpaceRight)+1, min($Y+$YOffset, $Y+$YOffset+$YSize)+1, max($X1+$XSpaceLeft, $X2-$XSpaceRight)-1, max($Y+$YOffset, $Y+$YOffset+$YSize)-1, $InnerColor);
                                     $this->Shadow = $RestoreShadow;
                                 }

                                 if ($Gradient) {
                                     $this->Shadow  = false;

                                     if ($GradientMode == GRADIENT_SIMPLE) {
                                         $GradientColor = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                         $this->drawGradientArea($X1+$XSpaceLeft, $Y+$YOffset, $X2-$XSpaceRight, $Y+$YOffset+$YSize, DIRECTION_HORIZONTAL, $GradientColor);
                                     } elseif ($GradientMode == GRADIENT_EFFECT_CAN) {
                                         $GradientColor1 = array("StartR"=>$GradientEndR,"StartG"=>$GradientEndG,"StartB"=>$GradientEndB,"EndR"=>$GradientStartR,"EndG"=>$GradientStartG,"EndB"=>$GradientStartB,"Alpha"=>$GradientAlpha);
                                         $GradientColor2 = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$GradientAlpha);
                                         $YSpan = floor($YSize / 3);

                                         $this->drawGradientArea($X1+$XSpaceLeft, $Y+$YOffset, $X2-$XSpaceRight, $Y+$YOffset+$YSpan, DIRECTION_VERTICAL, $GradientColor1);
                                         $this->drawGradientArea($X1+$XSpaceLeft, $Y+$YOffset+$YSpan, $X2-$XSpaceRight, $Y+$YOffset+$YSize, DIRECTION_VERTICAL, $GradientColor2);
                                     }
                                     $this->Shadow = $RestoreShadow;
                                 }
                             }

                             if ($DisplayValues) {
                                 $BarWidth = abs($X2-$X1)-$FontFactor;
                                 $BarHeight = $YSize+($YOffset/2)-$FontFactor/2;
                                 $Caption   = $this->scaleFormat(round($Serie["Data"][$Key], $DisplayRound), $Mode, $Format, $Unit);
                                 $TxtPos    = $this->getTextBox(0, 0, $DisplayFont, $DisplaySize, 0, $Caption);
                                 $TxtHeight = abs($TxtPos[2]["Y"] - $TxtPos[0]["Y"]);
                                 $TxtWidth  = abs($TxtPos[1]["X"] - $TxtPos[0]["X"]);

                                 $XCenter  = ($X2 - $X1) / 2 + $X1;
                                 $YCenter  = (($Y+$YOffset+$YSize) - ($Y+$YOffset)) / 2 + $Y+$YOffset;

                                 $Done = false;
                                 if ($DisplayOrientation == ORIENTATION_HORIZONTAL || $DisplayOrientation == ORIENTATION_AUTO) {
                                     if ($TxtHeight < $BarHeight && $TxtWidth < $BarWidth) {
                                         $this->drawText($XCenter, $YCenter, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"FontSize"=>$DisplaySize,"FontName"=>$DisplayFont));
                                         $Done = true;
                                     }
                                 }

                                 if ($DisplayOrientation == ORIENTATION_VERTICAL || ($DisplayOrientation == ORIENTATION_AUTO && !$Done)) {
                                     if ($TxtHeight < $BarWidth && $TxtWidth < $BarHeight) {
                                         $this->drawText($XCenter, $YCenter, $this->scaleFormat($Serie["Data"][$Key], $Mode, $Format, $Unit), array("R"=>$DisplayR,"G"=>$DisplayG,"B"=>$DisplayB,"Angle"=>90,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE,"FontSize"=>$DisplaySize,"FontName"=>$DisplayFont));
                                     }
                                 }
                             }

                             $LastX[$Key][$Pos] = $X2;
                         }

                         $Y = $Y + $YStep;
                     }
                 }
             }
         }
     }

     /* Draw a stacked area chart */
     public function drawStackedAreaChart($Format=null)
     {
         $DrawLine		= isset($Format["DrawLine"]) ? $Format["DrawLine"] : false;
         $LineSurrounding	= isset($Format["LineSurrounding"]) ? $Format["LineSurrounding"] : null;
         $LineR		= isset($Format["LineR"]) ? $Format["LineR"] : VOID;
         $LineG		= isset($Format["LineG"]) ? $Format["LineG"] : VOID;
         $LineB		= isset($Format["LineB"]) ? $Format["LineB"] : VOID;
         $LineAlpha		= isset($Format["LineAlpha"]) ? $Format["LineAlpha"] : 100;
         $DrawPlot		= isset($Format["DrawPlot"]) ? $Format["DrawPlot"] : false;
         $PlotRadius	= isset($Format["PlotRadius"]) ? $Format["PlotRadius"] : 2;
         $PlotBorder	= isset($Format["PlotBorder"]) ? $Format["PlotBorder"] : 1;
         $PlotBorderSurrounding = isset($Format["PlotBorderSurrounding"]) ? $Format["PlotBorderSurrounding"] : null;
         $PlotBorderR	= isset($Format["PlotBorderR"]) ? $Format["PlotBorderR"] : 0;
         $PlotBorderG	= isset($Format["PlotBorderG"]) ? $Format["PlotBorderG"] : 0;
         $PlotBorderB	= isset($Format["PlotBorderB"]) ? $Format["PlotBorderB"] : 0;
         $PlotBorderAlpha	= isset($Format["PlotBorderAlpha"]) ? $Format["PlotBorderAlpha"] : 50;
         $ForceTransparency	= isset($Format["ForceTransparency"]) ? $Format["ForceTransparency"] : null;

         $this->LastChartLayout = CHART_LAST_LAYOUT_STACKED;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         $RestoreShadow = $this->Shadow;
         $this->Shadow  = false;

         /* Build the offset data series */
         $OffsetData    = "";
         $OverallOffset = "";
         $SerieOrder    = "";
         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $SerieOrder[] = $SerieName;

                 foreach ($Serie["Data"] as $Key => $Value) {
                     if ($Value == VOID) {
                         $Value = 0;
                     }
                     if ($Value >= 0) {
                         $Sign = "+";
                     } else {
                         $Sign = "-";
                     }
                     if (!isset($OverallOffset[$Key]) || !isset($OverallOffset[$Key][$Sign])) {
                         $OverallOffset[$Key][$Sign] = 0;
                     }

                     if ($Sign == "+") {
                         $Data["Series"][$SerieName]["Data"][$Key] = $Value + $OverallOffset[$Key][$Sign];
                     } else {
                         $Data["Series"][$SerieName]["Data"][$Key] = $Value - $OverallOffset[$Key][$Sign];
                     }

                     $OverallOffset[$Key][$Sign] = $OverallOffset[$Key][$Sign] + abs($Value);
                 }
             }
         }
         $SerieOrder = array_reverse($SerieOrder);

         $LastX = "";
         $LastY = "";
         foreach ($SerieOrder as $Key => $SerieName) {
             $Serie = $Data["Series"][$SerieName];
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 if ($ForceTransparency != null) {
                     $Alpha = $ForceTransparency;
                 }

                 $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha);

                 if ($LineSurrounding != null) {
                     $LineColor = array("R"=>$R+$LineSurrounding,"G"=>$G+$LineSurrounding,"B"=>$B+$LineSurrounding,"Alpha"=>$Alpha);
                 } elseif ($LineR != VOID) {
                     $LineColor = array("R"=>$LineR,"G"=>$LineG,"B"=>$LineB,"Alpha"=>$LineAlpha);
                 } else {
                     $LineColor = $Color;
                 }

                 if ($PlotBorderSurrounding != null) {
                     $PlotBorderColor = array("R"=>$R+$PlotBorderSurrounding,"G"=>$G+$PlotBorderSurrounding,"B"=>$B+$PlotBorderSurrounding,"Alpha"=>$PlotBorderAlpha);
                 } else {
                     $PlotBorderColor = array("R"=>$PlotBorderR,"G"=>$PlotBorderG,"B"=>$PlotBorderB,"Alpha"=>$PlotBorderAlpha);
                 }

                 $AxisID	= $Serie["Axis"];
                 $Mode		= $Data["Axis"][$AxisID]["Display"];
                 $Format	= $Data["Axis"][$AxisID]["Format"];
                 $Unit		= $Data["Axis"][$AxisID]["Unit"];

                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]), true);
                 $YZero    = $this->scaleComputeY(0, array("AxisID"=>$Serie["Axis"]));

                 $this->DataSet->Data["Series"][$SerieName]["XOffset"] = 0;

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($YZero < $this->GraphAreaY1+1) {
                         $YZero = $this->GraphAreaY1+1;
                     }
                     if ($YZero > $this->GraphAreaY2-1) {
                         $YZero = $this->GraphAreaY2-1;
                     }

                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }

                     $Plots = "";
                     $Plots[] = $X;
                     $Plots[] = $YZero;
                     foreach ($PosArray as $Key => $Height) {
                         if ($Height != VOID) {
                             $Plots[] = $X;
                             $Plots[] = $YZero-$Height;
                         }
                         $X = $X + $XStep;
                     }
                     $Plots[] = $X-$XStep;
                     $Plots[] = $YZero;

                     $this->drawPolygon($Plots, $Color);

                     $this->Shadow = $RestoreShadow;
                     if ($DrawLine) {
                         for ($i=2; $i<=count($Plots)-6; $i=$i+2) {
                             $this->drawLine($Plots[$i], $Plots[$i+1], $Plots[$i+2], $Plots[$i+3], $LineColor);
                         }
                     }
                     if ($DrawPlot) {
                         for ($i=2; $i<=count($Plots)-4; $i=$i+2) {
                             if ($PlotBorder != 0) {
                                 $this->drawFilledCircle($Plots[$i], $Plots[$i+1], $PlotRadius+$PlotBorder, $PlotBorderColor);
                             }

                             $this->drawFilledCircle($Plots[$i], $Plots[$i+1], $PlotRadius, $Color);
                         }
                     }
                     $this->Shadow = false;
                 } elseif ($Data["Orientation"] == SCALE_POS_TOPBOTTOM) {
                     if ($YZero < $this->GraphAreaX1+1) {
                         $YZero = $this->GraphAreaX1+1;
                     }
                     if ($YZero > $this->GraphAreaX2-1) {
                         $YZero = $this->GraphAreaX2-1;
                     }

                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }

                     $Plots = "";
                     $Plots[] = $YZero;
                     $Plots[] = $Y;
                     foreach ($PosArray as $Key => $Height) {
                         if ($Height != VOID) {
                             $Plots[] = $YZero+$Height;
                             $Plots[] = $Y;
                         }
                         $Y = $Y + $YStep;
                     }
                     $Plots[] = $YZero;
                     $Plots[] = $Y-$YStep;

                     $this->drawPolygon($Plots, $Color);

                     $this->Shadow = $RestoreShadow;
                     if ($DrawLine) {
                         for ($i=2; $i<=count($Plots)-6; $i=$i+2) {
                             $this->drawLine($Plots[$i], $Plots[$i+1], $Plots[$i+2], $Plots[$i+3], $LineColor);
                         }
                     }
                     if ($DrawPlot) {
                         for ($i=2; $i<=count($Plots)-4; $i=$i+2) {
                             if ($PlotBorder != 0) {
                                 $this->drawFilledCircle($Plots[$i], $Plots[$i+1], $PlotRadius+$PlotBorder, $PlotBorderColor);
                             }

                             $this->drawFilledCircle($Plots[$i], $Plots[$i+1], $PlotRadius, $Color);
                         }
                     }
                     $this->Shadow = false;
                 }
             }
         }
         $this->Shadow = $RestoreShadow;
     }

     /* Returns a random color */
     public function getRandomColor($Alpha=100)
     {
         return(array("R"=>mt_rand(0, 255),"G"=>mt_rand(0, 255),"B"=>mt_rand(0, 255),"Alpha"=>$Alpha));
     }
 
     /* Validate a palette */
     public function validatePalette($Colors, $Surrounding=null)
     {
         $Result = "";

         if (!is_array($Colors)) {
             return($this->getRandomColor());
         }

         foreach ($Colors as $Key => $Values) {
             if (isset($Values["R"])) {
                 $Result[$Key]["R"] = $Values["R"];
             } else {
                 $Result[$Key]["R"] = mt_rand(0, 255);
             }
             if (isset($Values["G"])) {
                 $Result[$Key]["G"] = $Values["G"];
             } else {
                 $Result[$Key]["G"] = mt_rand(0, 255);
             }
             if (isset($Values["B"])) {
                 $Result[$Key]["B"] = $Values["B"];
             } else {
                 $Result[$Key]["B"] = mt_rand(0, 255);
             }
             if (isset($Values["Alpha"])) {
                 $Result[$Key]["Alpha"] = $Values["Alpha"];
             } else {
                 $Result[$Key]["Alpha"] = 100;
             }

             if ($Surrounding != null) {
                 $Result[$Key]["BorderR"] = $Result[$Key]["R"] + $Surrounding;
                 $Result[$Key]["BorderG"] = $Result[$Key]["G"] + $Surrounding;
                 $Result[$Key]["BorderB"] = $Result[$Key]["B"] + $Surrounding;
             } else {
                 if (isset($Values["BorderR"])) {
                     $Result[$Key]["BorderR"] = $Values["BorderR"];
                 } else {
                     $Result[$Key]["BorderR"] = $Result[$Key]["R"];
                 }
                 if (isset($Values["BorderG"])) {
                     $Result[$Key]["BorderG"] = $Values["BorderG"];
                 } else {
                     $Result[$Key]["BorderG"] = $Result[$Key]["G"];
                 }
                 if (isset($Values["BorderB"])) {
                     $Result[$Key]["BorderB"] = $Values["BorderB"];
                 } else {
                     $Result[$Key]["BorderB"] = $Result[$Key]["B"];
                 }
                 if (isset($Values["BorderAlpha"])) {
                     $Result[$Key]["BorderAlpha"] = $Values["BorderAlpha"];
                 } else {
                     $Result[$Key]["BorderAlpha"] = $Result[$Key]["Alpha"];
                 }
             }
         }

         return($Result);
     }

     /* Draw the derivative chart associated to the data series */
     public function drawDerivative($Format=null)
     {
         $Offset		= isset($Format["Offset"]) ? $Format["Offset"] : 10;
         $SerieSpacing	= isset($Format["SerieSpacing"]) ? $Format["SerieSpacing"] : 3;
         $DerivativeHeight	= isset($Format["DerivativeHeight"]) ? $Format["DerivativeHeight"] : 4;
         $ShadedSlopeBox	= isset($Format["ShadedSlopeBox"]) ? $Format["ShadedSlopeBox"] : false;
         $DrawBackground	= isset($Format["DrawBackground"]) ? $Format["DrawBackground"] : true;
         $BackgroundR	= isset($Format["BackgroundR"]) ? $Format["BackgroundR"] : 255;
         $BackgroundG	= isset($Format["BackgroundG"]) ? $Format["BackgroundG"] : 255;
         $BackgroundB	= isset($Format["BackgroundB"]) ? $Format["BackgroundB"] : 255;
         $BackgroundAlpha	= isset($Format["BackgroundAlpha"]) ? $Format["BackgroundAlpha"] : 20;
         $DrawBorder	= isset($Format["DrawBorder"]) ? $Format["DrawBorder"] : true;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : 0;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : 0;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : 0;
         $BorderAlpha	= isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : 100;
         $Caption		= isset($Format["Caption"]) ? $Format["Caption"] : true;
         $CaptionHeight	= isset($Format["CaptionHeight"]) ? $Format["CaptionHeight"] : 10;
         $CaptionWidth	= isset($Format["CaptionWidth"]) ? $Format["CaptionWidth"] : 20;
         $CaptionMargin	= isset($Format["CaptionMargin"]) ? $Format["CaptionMargin"] : 4;
         $CaptionLine	= isset($Format["CaptionLine"]) ? $Format["CaptionLine"] : false;
         $CaptionBox	= isset($Format["CaptionBox"]) ? $Format["CaptionBox"] : false;
         $CaptionBorderR	= isset($Format["CaptionBorderR"]) ? $Format["CaptionBorderR"] : 0;
         $CaptionBorderG	= isset($Format["CaptionBorderG"]) ? $Format["CaptionBorderG"] : 0;
         $CaptionBorderB	= isset($Format["CaptionBorderB"]) ? $Format["CaptionBorderB"] : 0;
         $CaptionFillR	= isset($Format["CaptionFillR"]) ? $Format["CaptionFillR"] : 255;
         $CaptionFillG	= isset($Format["CaptionFillG"]) ? $Format["CaptionFillG"] : 255;
         $CaptionFillB	= isset($Format["CaptionFillB"]) ? $Format["CaptionFillB"] : 255;
         $CaptionFillAlpha	= isset($Format["CaptionFillAlpha"]) ? $Format["CaptionFillAlpha"] : 80;
         $PositiveSlopeStartR	= isset($Format["PositiveSlopeStartR"]) ? $Format["PositiveSlopeStartR"] : 184;
         $PositiveSlopeStartG	= isset($Format["PositiveSlopeStartG"]) ? $Format["PositiveSlopeStartG"] : 234;
         $PositiveSlopeStartB	= isset($Format["PositiveSlopeStartB"]) ? $Format["PositiveSlopeStartB"] : 88;
         $PositiveSlopeEndR		= isset($Format["PositiveSlopeStartR"]) ? $Format["PositiveSlopeStartR"] : 239;
         $PositiveSlopeEndG		= isset($Format["PositiveSlopeStartG"]) ? $Format["PositiveSlopeStartG"] : 31;
         $PositiveSlopeEndB		= isset($Format["PositiveSlopeStartB"]) ? $Format["PositiveSlopeStartB"] : 36;
         $NegativeSlopeStartR	= isset($Format["NegativeSlopeStartR"]) ? $Format["NegativeSlopeStartR"] : 184;
         $NegativeSlopeStartG	= isset($Format["NegativeSlopeStartG"]) ? $Format["NegativeSlopeStartG"] : 234;
         $NegativeSlopeStartB	= isset($Format["NegativeSlopeStartB"]) ? $Format["NegativeSlopeStartB"] : 88;
         $NegativeSlopeEndR		= isset($Format["NegativeSlopeStartR"]) ? $Format["NegativeSlopeStartR"] : 67;
         $NegativeSlopeEndG		= isset($Format["NegativeSlopeStartG"]) ? $Format["NegativeSlopeStartG"] : 124;
         $NegativeSlopeEndB		= isset($Format["NegativeSlopeStartB"]) ? $Format["NegativeSlopeStartB"] : 227;

         $Data = $this->DataSet->getData();

         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
             $YPos = $this->DataSet->Data["GraphArea"]["Y2"] + $Offset;
         } else {
             $XPos = $this->DataSet->Data["GraphArea"]["X2"] + $Offset;
         }

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 $R = $Serie["Color"]["R"];
                 $G = $Serie["Color"]["G"];
                 $B = $Serie["Color"]["B"];
                 $Alpha = $Serie["Color"]["Alpha"];
                 $Ticks = $Serie["Ticks"];
                 $Weight = $Serie["Weight"];

                 $AxisID   = $Serie["Axis"];
                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($Caption) {
                         if ($CaptionLine) {
                             $StartX = floor($this->GraphAreaX1-$CaptionWidth+$XMargin-$CaptionMargin);
                             $EndX   = floor($this->GraphAreaX1-$CaptionMargin+$XMargin);

                             $CaptionSettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight);
                             if ($CaptionBox) {
                                 $this->drawFilledRectangle($StartX, $YPos, $EndX, $YPos+$CaptionHeight, array("R"=>$CaptionFillR,"G"=>$CaptionFillG,"B"=>$CaptionFillB,"BorderR"=>$CaptionBorderR,"BorderG"=>$CaptionBorderG,"BorderB"=>$CaptionBorderB,"Alpha"=>$CaptionFillAlpha));
                             }
                             $this->drawLine($StartX+2, $YPos+($CaptionHeight/2), $EndX-2, $YPos+($CaptionHeight/2), $CaptionSettings);
                         } else {
                             $this->drawFilledRectangle($this->GraphAreaX1-$CaptionWidth+$XMargin-$CaptionMargin, $YPos, $this->GraphAreaX1-$CaptionMargin+$XMargin, $YPos+$CaptionHeight, array("R"=>$R,"G"=>$G,"B"=>$B,"BorderR"=>$CaptionBorderR,"BorderG"=>$CaptionBorderG,"BorderB"=>$CaptionBorderB));
                         }
                     }

                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;

                     $TopY    = $YPos + ($CaptionHeight/2) - ($DerivativeHeight/2);
                     $BottomY = $YPos + ($CaptionHeight/2) + ($DerivativeHeight/2);

                     $StartX  = floor($this->GraphAreaX1+$XMargin);
                     $EndX    = floor($this->GraphAreaX2-$XMargin);

                     if ($DrawBackground) {
                         $this->drawFilledRectangle($StartX-1, $TopY-1, $EndX+1, $BottomY+1, array("R"=>$BackgroundR,"G"=>$BackgroundG,"B"=>$BackgroundB,"Alpha"=>$BackgroundAlpha));
                     }
                     if ($DrawBorder) {
                         $this->drawRectangle($StartX-1, $TopY-1, $EndX+1, $BottomY+1, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha));
                     }

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }

                     $RestoreShadow = $this->Shadow;
                     $this->Shadow  = false;

                     /* Determine the Max slope index */
                     $LastX = null;
                     $LastY = null;
                     $MinSlope = 0;
                     $MaxSlope = 1;
                     foreach ($PosArray as $Key => $Y) {
                         if ($Y != VOID && $LastX != null) {
                             $Slope = ($LastY - $Y);
                             if ($Slope > $MaxSlope) {
                                 $MaxSlope = $Slope;
                             }
                             if ($Slope < $MinSlope) {
                                 $MinSlope = $Slope;
                             }
                         }

                         if ($Y == VOID) {
                             $LastX = null;
                             $LastY = null;
                         } else {
                             $LastX = $X;
                             $LastY = $Y;
                         }
                     }

                     $LastX = null;
                     $LastY = null;
                     $LastColor = null;
                     foreach ($PosArray as $Key => $Y) {
                         if ($Y != VOID && $LastY != null) {
                             $Slope = ($LastY - $Y);

                             if ($Slope >= 0) {
                                 $SlopeIndex = (100 / $MaxSlope) * $Slope;
                                 $R = (($PositiveSlopeEndR - $PositiveSlopeStartR)/100)*$SlopeIndex+$PositiveSlopeStartR;
                                 $G = (($PositiveSlopeEndG - $PositiveSlopeStartG)/100)*$SlopeIndex+$PositiveSlopeStartG;
                                 $B = (($PositiveSlopeEndB - $PositiveSlopeStartB)/100)*$SlopeIndex+$PositiveSlopeStartB;
                             } elseif ($Slope < 0) {
                                 $SlopeIndex = (100 / abs($MinSlope)) * abs($Slope);
                                 $R = (($NegativeSlopeEndR - $NegativeSlopeStartR)/100)*$SlopeIndex+$NegativeSlopeStartR;
                                 $G = (($NegativeSlopeEndG - $NegativeSlopeStartG)/100)*$SlopeIndex+$NegativeSlopeStartG;
                                 $B = (($NegativeSlopeEndB - $NegativeSlopeStartB)/100)*$SlopeIndex+$NegativeSlopeStartB;
                             }

                             $Color = array("R"=>$R,"G"=>$G,"B"=>$B);

                             if ($ShadedSlopeBox && $LastColor != null) { // && $Slope != 0
                                 $GradientSettings = array("StartR"=>$LastColor["R"],"StartG"=>$LastColor["G"],"StartB"=>$LastColor["B"],"EndR"=>$R,"EndG"=>$G,"EndB"=>$B);
                                 $this->drawGradientArea($LastX, $TopY, $X, $BottomY, DIRECTION_HORIZONTAL, $GradientSettings);
                             } elseif (!$ShadedSlopeBox || $LastColor == null) { // || $Slope == 0
                                 $this->drawFilledRectangle(floor($LastX), $TopY, floor($X), $BottomY, $Color);
                             }

                             $LastColor = $Color;
                         }

                         if ($Y == VOID) {
                             $LastY = null;
                         } else {
                             $LastX = $X;
                             $LastY = $Y;
                         }

                         $X = $X + $XStep;
                     }

                     $YPos = $YPos + $CaptionHeight + $SerieSpacing;
                 } else {
                     if ($Caption) {
                         $StartY = floor($this->GraphAreaY1-$CaptionWidth+$XMargin-$CaptionMargin);
                         $EndY   = floor($this->GraphAreaY1-$CaptionMargin+$XMargin);
                         if ($CaptionLine) {
                             $CaptionSettings = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks,"Weight"=>$Weight);
                             if ($CaptionBox) {
                                 $this->drawFilledRectangle($XPos, $StartY, $XPos+$CaptionHeight, $EndY, array("R"=>$CaptionFillR,"G"=>$CaptionFillG,"B"=>$CaptionFillB,"BorderR"=>$CaptionBorderR,"BorderG"=>$CaptionBorderG,"BorderB"=>$CaptionBorderB,"Alpha"=>$CaptionFillAlpha));
                             }
                             $this->drawLine($XPos+($CaptionHeight/2), $StartY+2, $XPos+($CaptionHeight/2), $EndY-2, $CaptionSettings);
                         } else {
                             $this->drawFilledRectangle($XPos, $StartY, $XPos+$CaptionHeight, $EndY, array("R"=>$R,"G"=>$G,"B"=>$B,"BorderR"=>$CaptionBorderR,"BorderG"=>$CaptionBorderG,"BorderB"=>$CaptionBorderB));
                         }
                     }


                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $XStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;

                     $TopX    = $XPos + ($CaptionHeight/2) - ($DerivativeHeight/2);
                     $BottomX = $XPos + ($CaptionHeight/2) + ($DerivativeHeight/2);

                     $StartY  = floor($this->GraphAreaY1+$XMargin);
                     $EndY    = floor($this->GraphAreaY2-$XMargin);

                     if ($DrawBackground) {
                         $this->drawFilledRectangle($TopX-1, $StartY-1, $BottomX+1, $EndY+1, array("R"=>$BackgroundR,"G"=>$BackgroundG,"B"=>$BackgroundB,"Alpha"=>$BackgroundAlpha));
                     }
                     if ($DrawBorder) {
                         $this->drawRectangle($TopX-1, $StartY-1, $BottomX+1, $EndY+1, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha));
                     }

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }

                     $RestoreShadow = $this->Shadow;
                     $this->Shadow  = false;

                     /* Determine the Max slope index */
                     $LastX = null;
                     $LastY = null;
                     $MinSlope = 0;
                     $MaxSlope = 1;
                     foreach ($PosArray as $Key => $X) {
                         if ($X != VOID && $LastX != null) {
                             $Slope = ($X - $LastX);
                             if ($Slope > $MaxSlope) {
                                 $MaxSlope = $Slope;
                             }
                             if ($Slope < $MinSlope) {
                                 $MinSlope = $Slope;
                             }
                         }

                         if ($X == VOID) {
                             $LastX = null;
                         } else {
                             $LastX = $X;
                         }
                     }

                     $LastX = null;
                     $LastY = null;
                     $LastColor = null;
                     foreach ($PosArray as $Key => $X) {
                         if ($X != VOID && $LastX != null) {
                             $Slope = ($X - $LastX);

                             if ($Slope >= 0) {
                                 $SlopeIndex = (100 / $MaxSlope) * $Slope;
                                 $R = (($PositiveSlopeEndR - $PositiveSlopeStartR)/100)*$SlopeIndex+$PositiveSlopeStartR;
                                 $G = (($PositiveSlopeEndG - $PositiveSlopeStartG)/100)*$SlopeIndex+$PositiveSlopeStartG;
                                 $B = (($PositiveSlopeEndB - $PositiveSlopeStartB)/100)*$SlopeIndex+$PositiveSlopeStartB;
                             } elseif ($Slope < 0) {
                                 $SlopeIndex = (100 / abs($MinSlope)) * abs($Slope);
                                 $R = (($NegativeSlopeEndR - $NegativeSlopeStartR)/100)*$SlopeIndex+$NegativeSlopeStartR;
                                 $G = (($NegativeSlopeEndG - $NegativeSlopeStartG)/100)*$SlopeIndex+$NegativeSlopeStartG;
                                 $B = (($NegativeSlopeEndB - $NegativeSlopeStartB)/100)*$SlopeIndex+$NegativeSlopeStartB;
                             }

                             $Color = array("R"=>$R,"G"=>$G,"B"=>$B);

                             if ($ShadedSlopeBox && $LastColor != null) {
                                 $GradientSettings = array("StartR"=>$LastColor["R"],"StartG"=>$LastColor["G"],"StartB"=>$LastColor["B"],"EndR"=>$R,"EndG"=>$G,"EndB"=>$B);

                                 $this->drawGradientArea($TopX, $LastY, $BottomX, $Y, DIRECTION_VERTICAL, $GradientSettings);
                             } elseif (!$ShadedSlopeBox || $LastColor == null) {
                                 $this->drawFilledRectangle($TopX, floor($LastY), $BottomX, floor($Y), $Color);
                             }

                             $LastColor = $Color;
                         }

                         if ($X == VOID) {
                             $LastX = null;
                         } else {
                             $LastX = $X;
                             $LastY = $Y;
                         }

                         $Y = $Y + $XStep;
                     }

                     $XPos = $XPos + $CaptionHeight + $SerieSpacing;
                 }

                 $this->Shadow = $RestoreShadow;
             }
         }
     }

     /* Draw the line of best fit */
     public function drawBestFit($Format="")
     {
         $OverrideTicks	= isset($Format["Ticks"]) ? $Format["Ticks"] : null;
         $OverrideR		= isset($Format["R"]) ? $Format["R"] : VOID;
         $OverrideG		= isset($Format["G"]) ? $Format["G"] : VOID;
         $OverrideB		= isset($Format["B"]) ? $Format["B"] : VOID;
         $OverrideAlpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : VOID;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         foreach ($Data["Series"] as $SerieName => $Serie) {
             if ($Serie["isDrawable"] == true && $SerieName != $Data["Abscissa"]) {
                 if ($OverrideR != VOID && $OverrideG != VOID && $OverrideB != VOID) {
                     $R = $OverrideR;
                     $G = $OverrideG;
                     $B = $OverrideB;
                 } else {
                     $R = $Serie["Color"]["R"];
                     $G = $Serie["Color"]["G"];
                     $B = $Serie["Color"]["B"];
                 }
                 if ($OverrideTicks == null) {
                     $Ticks = $Serie["Ticks"];
                 } else {
                     $Ticks = $OverrideTicks;
                 }
                 if ($OverrideAlpha == VOID) {
                     $Alpha = $Serie["Color"]["Alpha"];
                 } else {
                     $Alpha = $OverrideAlpha;
                 }

                 $Color = array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha,"Ticks"=>$Ticks);

                 $AxisID   = $Serie["Axis"];
                 $PosArray = $this->scaleComputeY($Serie["Data"], array("AxisID"=>$Serie["Axis"]));

                 if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                     if ($XDivs == 0) {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                     } else {
                         $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                     }
                     $X = $this->GraphAreaX1 + $XMargin;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $Sxy = 0;
                     $Sx = 0;
                     $Sy = 0;
                     $Sxx = 0;
                     foreach ($PosArray as $Key => $Y) {
                         if ($Y != VOID) {
                             $Sxy = $Sxy + $X*$Y;
                             $Sx  = $Sx + $X;
                             $Sy  = $Sy + $Y;
                             $Sxx = $Sxx + $X*$X;
                         }

                         $X = $X + $XStep;
                     }
                     $n = count($this->DataSet->stripVOID($PosArray)); //$n = count($PosArray);
                     $M = (($n*$Sxy)-($Sx*$Sy)) / (($n*$Sxx)-($Sx*$Sx));
                     $B = (($Sy)-($M*$Sx))/($n);

                     $X1 = $this->GraphAreaX1 + $XMargin;
                     $Y1 = $M * $X1 + $B;
                     $X2 = $this->GraphAreaX2 - $XMargin;
                     $Y2 = $M * $X2 + $B;

                     if ($Y1 < $this->GraphAreaY1) {
                         $X1 = $X1 + ($this->GraphAreaY1-$Y1);
                         $Y1 = $this->GraphAreaY1;
                     }
                     if ($Y1 > $this->GraphAreaY2) {
                         $X1 = $X1 + ($Y1-$this->GraphAreaY2);
                         $Y1 = $this->GraphAreaY2;
                     }
                     if ($Y2 < $this->GraphAreaY1) {
                         $X2 = $X2 - ($this->GraphAreaY1-$Y2);
                         $Y2 = $this->GraphAreaY1;
                     }
                     if ($Y2 > $this->GraphAreaY2) {
                         $X2 = $X2 - ($Y2-$this->GraphAreaY2);
                         $Y2 = $this->GraphAreaY2;
                     }

                     $this->drawLine($X1, $Y1, $X2, $Y2, $Color);
                 } else {
                     if ($XDivs == 0) {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                     } else {
                         $YStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                     }
                     $Y = $this->GraphAreaY1 + $XMargin;

                     if (!is_array($PosArray)) {
                         $Value = $PosArray;
                         $PosArray = "";
                         $PosArray[0] = $Value;
                     }
                     $Sxy = 0;
                     $Sx = 0;
                     $Sy = 0;
                     $Sxx = 0;
                     foreach ($PosArray as $Key => $X) {
                         if ($X != VOID) {
                             $Sxy = $Sxy + $X*$Y;
                             $Sx  = $Sx + $Y;
                             $Sy  = $Sy + $X;
                             $Sxx = $Sxx + $Y*$Y;
                         }

                         $Y = $Y + $YStep;
                     }
                     $n = count($this->DataSet->stripVOID($PosArray)); //$n = count($PosArray);
                     $M = (($n*$Sxy)-($Sx*$Sy)) / (($n*$Sxx)-($Sx*$Sx));
                     $B = (($Sy)-($M*$Sx))/($n);

                     $Y1 = $this->GraphAreaY1 + $XMargin;
                     $X1 = $M * $Y1 + $B;
                     $Y2 = $this->GraphAreaY2 - $XMargin;
                     $X2 = $M * $Y2 + $B;

                     if ($X1 < $this->GraphAreaX1) {
                         $Y1 = $Y1 + ($this->GraphAreaX1-$X1);
                         $X1 = $this->GraphAreaX1;
                     }
                     if ($X1 > $this->GraphAreaX2) {
                         $Y1 = $Y1 + ($X1-$this->GraphAreaX2);
                         $X1 = $this->GraphAreaX2;
                     }
                     if ($X2 < $this->GraphAreaX1) {
                         $Y2 = $Y2 - ($this->GraphAreaY1-$X2);
                         $X2 = $this->GraphAreaX1;
                     }
                     if ($X2 > $this->GraphAreaX2) {
                         $Y2 = $Y2 - ($X2-$this->GraphAreaX2);
                         $X2 = $this->GraphAreaX2;
                     }

                     $this->drawLine($X1, $Y1, $X2, $Y2, $Color);
                 }
             }
         }
     }

     /* Write labels */
     public function writeLabel($SeriesName, $Indexes, $Format="")
     {
         $OverrideTitle	= isset($Format["OverrideTitle"]) ? $Format["OverrideTitle"] : null;
         $ForceLabels	= isset($Format["ForceLabels"]) ? $Format["ForceLabels"] : null;
         $DrawPoint		= isset($Format["DrawPoint"]) ? $Format["DrawPoint"] : LABEL_POINT_BOX;
         $DrawVerticalLine	= isset($Format["DrawVerticalLine"]) ? $Format["DrawVerticalLine"] : false;
         $VerticalLineR	= isset($Format["VerticalLineR"]) ? $Format["VerticalLineR"] : 0;
         $VerticalLineG	= isset($Format["VerticalLineG"]) ? $Format["VerticalLineG"] : 0;
         $VerticalLineB	= isset($Format["VerticalLineB"]) ? $Format["VerticalLineB"] : 0;
         $VerticalLineAlpha	= isset($Format["VerticalLineAlpha"]) ? $Format["VerticalLineAlpha"] : 40;
         $VerticalLineTicks	= isset($Format["VerticalLineTicks"]) ? $Format["VerticalLineTicks"] : 2;

         $Data = $this->DataSet->getData();
         list($XMargin, $XDivs) = $this->scaleGetXSettings();

         if (!is_array($Indexes)) {
             $Index = $Indexes;
             $Indexes = "";
             $Indexes[] = $Index;
         }
         if (!is_array($SeriesName)) {
             $SerieName = $SeriesName;
             $SeriesName = "";
             $SeriesName[] = $SerieName;
         }
         if ($ForceLabels != null && !is_array($ForceLabels)) {
             $ForceLabel = $ForceLabels;
             $ForceLabels = "";
             $ForceLabels[] = $ForceLabel;
         }

         foreach ($Indexes as $Key => $Index) {
             $Series = "";

             if ($Data["Orientation"] == SCALE_POS_LEFTRIGHT) {
                 if ($XDivs == 0) {
                     $XStep = ($this->GraphAreaX2-$this->GraphAreaX1)/4;
                 } else {
                     $XStep = ($this->GraphAreaX2-$this->GraphAreaX1-$XMargin*2)/$XDivs;
                 }
                 $X = $this->GraphAreaX1 + $XMargin + $Index * $XStep;

                 if ($DrawVerticalLine) {
                     $this->drawLine($X, $this->GraphAreaY1+$Data["YMargin"], $X, $this->GraphAreaY2-$Data["YMargin"], array("R"=>$VerticalLineR,"G"=>$VerticalLineG,"B"=>$VerticalLineB,"Alpha"=>$VerticalLineAlpha,"Ticks"=>$VerticalLineTicks));
                 }

                 $MinY = $this->GraphAreaY2;
                 foreach ($SeriesName as $iKey => $SerieName) {
                     if (isset($Data["Series"][$SerieName]["Data"][$Index])) {
                         $AxisID       = $Data["Series"][$SerieName]["Axis"];
                         $XAxisMode    = $Data["XAxisDisplay"];
                         $XAxisFormat  = $Data["XAxisFormat"];
                         $XAxisUnit    = $Data["XAxisUnit"];
                         $AxisMode     = $Data["Axis"][$AxisID]["Display"];
                         $AxisFormat   = $Data["Axis"][$AxisID]["Format"];
                         $AxisUnit     = $Data["Axis"][$AxisID]["Unit"];

                         if (isset($Data["Abscissa"]) && isset($Data["Series"][$Data["Abscissa"]]["Data"][$Index])) {
                             $XLabel = $this->scaleFormat($Data["Series"][$Data["Abscissa"]]["Data"][$Index], $XAxisMode, $XAxisFormat, $XAxisUnit);
                         } else {
                             $XLabel = "";
                         }

                         if ($OverrideTitle != null) {
                             $Description = $OverrideTitle;
                         } elseif (count($SeriesName) == 1) {
                             $Description = $Data["Series"][$SerieName]["Description"]." - ".$XLabel;
                         } elseif (isset($Data["Abscissa"]) && isset($Data["Series"][$Data["Abscissa"]]["Data"][$Index])) {
                             $Description = $XLabel;
                         }

                         $Serie = "";
                         $Serie["R"] = $Data["Series"][$SerieName]["Color"]["R"];
                         $Serie["G"] = $Data["Series"][$SerieName]["Color"]["G"];
                         $Serie["B"] = $Data["Series"][$SerieName]["Color"]["B"];
                         $Serie["Alpha"] = $Data["Series"][$SerieName]["Color"]["Alpha"];

                         if (count($SeriesName) == 1 && isset($Data["Series"][$SerieName]["XOffset"])) {
                             $SerieOffset = $Data["Series"][$SerieName]["XOffset"];
                         } else {
                             $SerieOffset = 0;
                         }

                         $Value = $Data["Series"][$SerieName]["Data"][$Index];
                         if ($Value == VOID) {
                             $Value = "NaN";
                         }

                         if ($ForceLabels != null) {
                             $Caption = isset($ForceLabels[$Key]) ? $ForceLabels[$Key] : "Not set";
                         } else {
                             $Caption = $this->scaleFormat($Value, $AxisMode, $AxisFormat, $AxisUnit);
                         }

                         if ($this->LastChartLayout == CHART_LAST_LAYOUT_STACKED) {
                             if ($Value >=0) {
                                 $LookFor = "+";
                             } else {
                                 $LookFor = "-";
                             }

                             $Value = 0;
                             $Done = false;
                             foreach ($Data["Series"] as $Name => $SerieLookup) {
                                 if ($SerieLookup["isDrawable"] == true && $Name != $Data["Abscissa"] && !$Done) {
                                     if (isset($Data["Series"][$Name]["Data"][$Index]) && $Data["Series"][$Name]["Data"][$Index] != VOID) {
                                         if ($Data["Series"][$Name]["Data"][$Index] >= 0 && $LookFor == "+") {
                                             $Value = $Value + $Data["Series"][$Name]["Data"][$Index];
                                         }
                                         if ($Data["Series"][$Name]["Data"][$Index] < 0 && $LookFor == "-") {
                                             $Value = $Value - $Data["Series"][$Name]["Data"][$Index];
                                         }
                                         if ($Name == $SerieName) {
                                             $Done = true;
                                         }
                                     }
                                 }
                             }
                         }

                         $X = floor($this->GraphAreaX1 + $XMargin + $Index * $XStep + $SerieOffset);
                         $Y = floor($this->scaleComputeY($Value, array("AxisID"=>$AxisID)));

                         if ($Y < $MinY) {
                             $MinY = $Y;
                         }

                         if ($DrawPoint == LABEL_POINT_CIRCLE) {
                             $this->drawFilledCircle($X, $Y, 3, array("R"=>255,"G"=>255,"B"=>255,"BorderR"=>0,"BorderG"=>0,"BorderB"=>0));
                         } elseif ($DrawPoint == LABEL_POINT_BOX) {
                             $this->drawFilledRectangle($X-2, $Y-2, $X+2, $Y+2, array("R"=>255,"G"=>255,"B"=>255,"BorderR"=>0,"BorderG"=>0,"BorderB"=>0));
                         }

                         $Series[] = array("Format"=>$Serie,"Caption"=>$Caption);
                     }
                 }
                 $this->drawLabelBox($X, $MinY-3, $Description, $Series, $Format);
             } else {
                 if ($XDivs == 0) {
                     $XStep = ($this->GraphAreaY2-$this->GraphAreaY1)/4;
                 } else {
                     $XStep = ($this->GraphAreaY2-$this->GraphAreaY1-$XMargin*2)/$XDivs;
                 }
                 $Y = $this->GraphAreaY1 + $XMargin + $Index * $XStep;

                 if ($DrawVerticalLine) {
                     $this->drawLine($this->GraphAreaX1+$Data["YMargin"], $Y, $this->GraphAreaX2-$Data["YMargin"], $Y, array("R"=>$VerticalLineR,"G"=>$VerticalLineG,"B"=>$VerticalLineB,"Alpha"=>$VerticalLineAlpha,"Ticks"=>$VerticalLineTicks));
                 }

                 $MinX = $this->GraphAreaX2;
                 foreach ($SeriesName as $Key => $SerieName) {
                     if (isset($Data["Series"][$SerieName]["Data"][$Index])) {
                         $AxisID      = $Data["Series"][$SerieName]["Axis"];
                         $XAxisMode   = $Data["XAxisDisplay"];
                         $XAxisFormat = $Data["XAxisFormat"];
                         $XAxisUnit   = $Data["XAxisUnit"];
                         $AxisMode    = $Data["Axis"][$AxisID]["Display"];
                         $AxisFormat  = $Data["Axis"][$AxisID]["Format"];
                         $AxisUnit    = $Data["Axis"][$AxisID]["Unit"];

                         if (isset($Data["Abscissa"]) && isset($Data["Series"][$Data["Abscissa"]]["Data"][$Index])) {
                             $XLabel = $this->scaleFormat($Data["Series"][$Data["Abscissa"]]["Data"][$Index], $XAxisMode, $XAxisFormat, $XAxisUnit);
                         } else {
                             $XLabel = "";
                         }

                         if ($OverrideTitle != null) {
                             $Description = $OverrideTitle;
                         } elseif (count($SeriesName) == 1) {
                             if (isset($Data["Abscissa"]) && isset($Data["Series"][$Data["Abscissa"]]["Data"][$Index])) {
                                 $Description = $Data["Series"][$SerieName]["Description"]." - ".$XLabel;
                             }
                         } elseif (isset($Data["Abscissa"]) && isset($Data["Series"][$Data["Abscissa"]]["Data"][$Index])) {
                             $Description = $XLabel;
                         }

                         $Serie = "";
                         if (isset($Data["Extended"]["Palette"][$Index])) {
                             $Serie["R"] = $Data["Extended"]["Palette"][$Index]["R"];
                             $Serie["G"] = $Data["Extended"]["Palette"][$Index]["G"];
                             $Serie["B"] = $Data["Extended"]["Palette"][$Index]["B"];
                             $Serie["Alpha"] = $Data["Extended"]["Palette"][$Index]["Alpha"];
                         } else {
                             $Serie["R"] = $Data["Series"][$SerieName]["Color"]["R"];
                             $Serie["G"] = $Data["Series"][$SerieName]["Color"]["G"];
                             $Serie["B"] = $Data["Series"][$SerieName]["Color"]["B"];
                             $Serie["Alpha"] = $Data["Series"][$SerieName]["Color"]["Alpha"];
                         }

                         if (count($SeriesName) == 1 && isset($Data["Series"][$SerieName]["XOffset"])) {
                             $SerieOffset = $Data["Series"][$SerieName]["XOffset"];
                         } else {
                             $SerieOffset = 0;
                         }

                         $Value = $Data["Series"][$SerieName]["Data"][$Index];
                         if ($ForceLabels != null) {
                             $Caption = isset($ForceLabels[$Key]) ? $ForceLabels[$Key] : "Not set";
                         } else {
                             $Caption = $this->scaleFormat($Value, $AxisMode, $AxisFormat, $AxisUnit);
                         }
                         if ($Value == VOID) {
                             $Value = "NaN";
                         }

                         if ($this->LastChartLayout == CHART_LAST_LAYOUT_STACKED) {
                             if ($Value >=0) {
                                 $LookFor = "+";
                             } else {
                                 $LookFor = "-";
                             }

                             $Value = 0;
                             $Done = false;
                             foreach ($Data["Series"] as $Name => $SerieLookup) {
                                 if ($SerieLookup["isDrawable"] == true && $Name != $Data["Abscissa"] && !$Done) {
                                     if (isset($Data["Series"][$Name]["Data"][$Index]) && $Data["Series"][$Name]["Data"][$Index] != VOID) {
                                         if ($Data["Series"][$Name]["Data"][$Index] >= 0 && $LookFor == "+") {
                                             $Value = $Value + $Data["Series"][$Name]["Data"][$Index];
                                         }
                                         if ($Data["Series"][$Name]["Data"][$Index] < 0 && $LookFor == "-") {
                                             $Value = $Value - $Data["Series"][$Name]["Data"][$Index];
                                         }
                                         if ($Name == $SerieName) {
                                             $Done = true;
                                         }
                                     }
                                 }
                             }
                         }

                         $X = floor($this->scaleComputeY($Value, array("AxisID"=>$AxisID)));
                         $Y = floor($this->GraphAreaY1 + $XMargin + $Index * $XStep + $SerieOffset);

                         if ($X < $MinX) {
                             $MinX = $X;
                         }

                         if ($DrawPoint == LABEL_POINT_CIRCLE) {
                             $this->drawFilledCircle($X, $Y, 3, array("R"=>255,"G"=>255,"B"=>255,"BorderR"=>0,"BorderG"=>0,"BorderB"=>0));
                         } elseif ($DrawPoint == LABEL_POINT_BOX) {
                             $this->drawFilledRectangle($X-2, $Y-2, $X+2, $Y+2, array("R"=>255,"G"=>255,"B"=>255,"BorderR"=>0,"BorderG"=>0,"BorderB"=>0));
                         }

                         $Series[] = array("Format"=>$Serie,"Caption"=>$Caption);
                     }
                 }
                 $this->drawLabelBox($MinX, $Y-3, $Description, $Series, $Format);
             }
         }
     }

     /* Draw a label box */
     public function drawLabelBox($X, $Y, $Title, $Captions, $Format="")
     {
         $NoTitle			= isset($Format["NoTitle"]) ? $Format["NoTitle"] : null;
         $BoxWidth			= isset($Format["BoxWidth"]) ? $Format["BoxWidth"] : 50;
         $DrawSerieColor		= isset($Format["DrawSerieColor"]) ? $Format["DrawSerieColor"] : true;
         $SerieR			= isset($Format["SerieR"]) ? $Format["SerieR"] : null;
         $SerieG			= isset($Format["SerieG"]) ? $Format["SerieG"] : null;
         $SerieB			= isset($Format["SerieB"]) ? $Format["SerieB"] : null;
         $SerieAlpha		= isset($Format["SerieAlpha"]) ? $Format["SerieAlpha"] : null;
         $SerieBoxSize		= isset($Format["SerieBoxSize"]) ? $Format["SerieBoxSize"] : 6;
         $SerieBoxSpacing		= isset($Format["SerieBoxSpacing"]) ? $Format["SerieBoxSpacing"] : 4;
         $VerticalMargin		= isset($Format["VerticalMargin"]) ? $Format["VerticalMargin"] : 10;
         $HorizontalMargin		= isset($Format["HorizontalMargin"]) ? $Format["HorizontalMargin"] : 8;
         $R				= isset($Format["R"]) ? $Format["R"] : $this->FontColorR;
         $G				= isset($Format["G"]) ? $Format["G"] : $this->FontColorG;
         $B				= isset($Format["B"]) ? $Format["B"] : $this->FontColorB;
         $Alpha			= isset($Format["Alpha"]) ? $Format["Alpha"] : $this->FontColorA;
         $FontName			= isset($Format["FontName"]) ? $Format["FontName"] : $this->FontName;
         $FontSize			= isset($Format["FontSize"]) ? $Format["FontSize"] : $this->FontSize;
         $TitleMode			= isset($Format["TitleMode"]) ? $Format["TitleMode"] : LABEL_TITLE_NOBACKGROUND;
         $TitleR			= isset($Format["TitleR"]) ? $Format["TitleR"] : $R;
         $TitleG			= isset($Format["TitleG"]) ? $Format["TitleG"] : $G;
         $TitleB			= isset($Format["TitleB"]) ? $Format["TitleB"] : $B;
         $TitleAlpha		= isset($Format["TitleAlpha"]) ? $Format["TitleAlpha"] : 100;
         $TitleBackgroundR		= isset($Format["TitleBackgroundR"]) ? $Format["TitleBackgroundR"] : 0;
         $TitleBackgroundG		= isset($Format["TitleBackgroundG"]) ? $Format["TitleBackgroundG"] : 0;
         $TitleBackgroundB		= isset($Format["TitleBackgroundB"]) ? $Format["TitleBackgroundB"] : 0;
         $TitleBackgroundAlpha	= isset($Format["TitleBackgroundAlpha"]) ? $Format["TitleBackgroundAlpha"] : 100;
         $GradientStartR		= isset($Format["GradientStartR"]) ? $Format["GradientStartR"] : 255;
         $GradientStartG		= isset($Format["GradientStartG"]) ? $Format["GradientStartG"] : 255;
         $GradientStartB		= isset($Format["GradientStartB"]) ? $Format["GradientStartB"] : 255;
         $GradientEndR		= isset($Format["GradientEndR"]) ? $Format["GradientEndR"] : 220;
         $GradientEndG		= isset($Format["GradientEndG"]) ? $Format["GradientEndG"] : 220;
         $GradientEndB		= isset($Format["GradientEndB"]) ? $Format["GradientEndB"] : 220;
         $BoxAlpha			= isset($Format["BoxAlpha"]) ? $Format["BoxAlpha"] : 100;

         if (!$DrawSerieColor) {
             $SerieBoxSize = 0;
             $SerieBoxSpacing = 0;
         }

         $TxtPos      = $this->getTextBox($X, $Y, $FontName, $FontSize, 0, $Title);
         $TitleWidth  = ($TxtPos[1]["X"] - $TxtPos[0]["X"])+$VerticalMargin*2;
         $TitleHeight = ($TxtPos[0]["Y"] - $TxtPos[2]["Y"]);

         if ($NoTitle) {
             $TitleWidth = 0;
             $TitleHeight = 0;
         }

         $CaptionWidth = 0;
         $CaptionHeight = -$HorizontalMargin;
         foreach ($Captions as $Key =>$Caption) {
             $TxtPos        = $this->getTextBox($X, $Y, $FontName, $FontSize, 0, $Caption["Caption"]);
             $CaptionWidth  = max($CaptionWidth, ($TxtPos[1]["X"] - $TxtPos[0]["X"])+$VerticalMargin*2);
             $CaptionHeight = $CaptionHeight + max(($TxtPos[0]["Y"] - $TxtPos[2]["Y"]), ($SerieBoxSize+2)) + $HorizontalMargin;
         }

         if ($CaptionHeight <= 5) {
             $CaptionHeight = $CaptionHeight + $HorizontalMargin/2;
         }

         if ($DrawSerieColor) {
             $CaptionWidth = $CaptionWidth + $SerieBoxSize + $SerieBoxSpacing;
         }

         $BoxWidth = max($BoxWidth, $TitleWidth, $CaptionWidth);

         $XMin = $X - 5 - floor(($BoxWidth-10) / 2);
         $XMax = $X + 5 + floor(($BoxWidth-10) / 2);

         $RestoreShadow = $this->Shadow;
         if ($this->Shadow == true) {
             $this->Shadow = false;

             $Poly = "";
             $Poly[] = $X+$this->ShadowX;
             $Poly[] = $Y+$this->ShadowX;
             $Poly[] = $X+5+$this->ShadowX;
             $Poly[] = $Y-5+$this->ShadowX;
             $Poly[] = $XMax+$this->ShadowX;
             $Poly[] = $Y-5+$this->ShadowX;

             if ($NoTitle) {
                 $Poly[] = $XMax+$this->ShadowX;
                 $Poly[] = $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2+$this->ShadowX;
                 $Poly[] = $XMin+$this->ShadowX;
                 $Poly[] = $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2+$this->ShadowX;
             } else {
                 $Poly[] = $XMax+$this->ShadowX;
                 $Poly[] = $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3+$this->ShadowX;
                 $Poly[] = $XMin+$this->ShadowX;
                 $Poly[] = $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3+$this->ShadowX;
             }

             $Poly[] = $XMin+$this->ShadowX;
             $Poly[] = $Y-5+$this->ShadowX;
             $Poly[] = $X-5+$this->ShadowX;
             $Poly[] = $Y-5+$this->ShadowX;
             $this->drawPolygon($Poly, array("R"=>$this->ShadowR,"G"=>$this->ShadowG,"B"=>$this->ShadowB,"Alpha"=>$this->Shadowa));
         }

         /* Draw the background */
         $GradientSettings = array("StartR"=>$GradientStartR,"StartG"=>$GradientStartG,"StartB"=>$GradientStartB,"EndR"=>$GradientEndR,"EndG"=>$GradientEndG,"EndB"=>$GradientEndB,"Alpha"=>$BoxAlpha);
         if ($NoTitle) {
             $this->drawGradientArea($XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMax, $Y-6, DIRECTION_VERTICAL, $GradientSettings);
         } else {
             $this->drawGradientArea($XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMax, $Y-6, DIRECTION_VERTICAL, $GradientSettings);
         }
         $Poly = "";
         $Poly[] = $X;
         $Poly[] = $Y;
         $Poly[] = $X-5;
         $Poly[] = $Y-5;
         $Poly[] = $X+5;
         $Poly[] = $Y-5;
         $this->drawPolygon($Poly, array("R"=>$GradientEndR,"G"=>$GradientEndG,"B"=>$GradientEndB,"Alpha"=>$BoxAlpha,"NoBorder"=>true));

         /* Outer border */
         $OuterBorderColor = $this->allocateColor($this->Picture, 100, 100, 100, $BoxAlpha);
         imageline($this->Picture, $XMin, $Y-5, $X-5, $Y-5, $OuterBorderColor);
         imageline($this->Picture, $X, $Y, $X-5, $Y-5, $OuterBorderColor);
         imageline($this->Picture, $X, $Y, $X+5, $Y-5, $OuterBorderColor);
         imageline($this->Picture, $X+5, $Y-5, $XMax, $Y-5, $OuterBorderColor);
         if ($NoTitle) {
             imageline($this->Picture, $XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMin, $Y-5, $OuterBorderColor);
             imageline($this->Picture, $XMax, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMax, $Y-5, $OuterBorderColor);
             imageline($this->Picture, $XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMax, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $OuterBorderColor);
         } else {
             imageline($this->Picture, $XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMin, $Y-5, $OuterBorderColor);
             imageline($this->Picture, $XMax, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMax, $Y-5, $OuterBorderColor);
             imageline($this->Picture, $XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMax, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $OuterBorderColor);
         }

         /* Inner border */
         $InnerBorderColor = $this->allocateColor($this->Picture, 255, 255, 255, $BoxAlpha);
         imageline($this->Picture, $XMin+1, $Y-6, $X-5, $Y-6, $InnerBorderColor);
         imageline($this->Picture, $X, $Y-1, $X-5, $Y-6, $InnerBorderColor);
         imageline($this->Picture, $X, $Y-1, $X+5, $Y-6, $InnerBorderColor);
         imageline($this->Picture, $X+5, $Y-6, $XMax-1, $Y-6, $InnerBorderColor);
         if ($NoTitle) {
             imageline($this->Picture, $XMin+1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMin+1, $Y-6, $InnerBorderColor);
             imageline($this->Picture, $XMax-1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMax-1, $Y-6, $InnerBorderColor);
             imageline($this->Picture, $XMin+1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $XMax-1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*2, $InnerBorderColor);
         } else {
             imageline($this->Picture, $XMin+1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMin+1, $Y-6, $InnerBorderColor);
             imageline($this->Picture, $XMax-1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMax-1, $Y-6, $InnerBorderColor);
             imageline($this->Picture, $XMin+1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMax-1, $Y-4-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $InnerBorderColor);
         }

         /* Draw the separator line */
         if ($TitleMode == LABEL_TITLE_NOBACKGROUND && !$NoTitle) {
             $YPos    = $Y-7-$CaptionHeight-$HorizontalMargin-$HorizontalMargin/2;
             $XMargin = $VerticalMargin / 2;
             $this->drawLine($XMin+$XMargin, $YPos+1, $XMax-$XMargin, $YPos+1, array("R"=>$GradientEndR,"G"=>$GradientEndG,"B"=>$GradientEndB,"Alpha"=>$BoxAlpha));
             $this->drawLine($XMin+$XMargin, $YPos, $XMax-$XMargin, $YPos, array("R"=>$GradientStartR,"G"=>$GradientStartG,"B"=>$GradientStartB,"Alpha"=>$BoxAlpha));
         } elseif ($TitleMode == LABEL_TITLE_BACKGROUND) {
             $this->drawFilledRectangle($XMin, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin*3, $XMax, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin+$HorizontalMargin/2, array("R"=>$TitleBackgroundR,"G"=>$TitleBackgroundG,"B"=>$TitleBackgroundB,"Alpha"=>$BoxAlpha));
             imageline($this->Picture, $XMin+1, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin+$HorizontalMargin/2+1, $XMax-1, $Y-5-$TitleHeight-$CaptionHeight-$HorizontalMargin+$HorizontalMargin/2+1, $InnerBorderColor);
         }

         /* Write the description */
         if (!$NoTitle) {
             $this->drawText($XMin+$VerticalMargin, $Y-7-$CaptionHeight-$HorizontalMargin*2, $Title, array("Align"=>TEXT_ALIGN_BOTTOMLEFT,"R"=>$TitleR,"G"=>$TitleG,"B"=>$TitleB));
         }

         /* Write the value */
         $YPos = $Y-5-$HorizontalMargin;
         $XPos = $XMin+$VerticalMargin+$SerieBoxSize+$SerieBoxSpacing;
         foreach ($Captions as $Key => $Caption) {
             $CaptionTxt    = $Caption["Caption"];
             $TxtPos        = $this->getTextBox($XPos, $YPos, $FontName, $FontSize, 0, $CaptionTxt);
             $CaptionHeight = ($TxtPos[0]["Y"] - $TxtPos[2]["Y"]);

             /* Write the serie color if needed */
             if ($DrawSerieColor) {
                 $BoxSettings = array("R"=>$Caption["Format"]["R"],"G"=>$Caption["Format"]["G"],"B"=>$Caption["Format"]["B"],"Alpha"=>$Caption["Format"]["Alpha"],"BorderR"=>0,"BorderG"=>0,"BorderB"=>0);
                 $this->drawFilledRectangle($XMin+$VerticalMargin, $YPos-$SerieBoxSize, $XMin+$VerticalMargin+$SerieBoxSize, $YPos, $BoxSettings);
             }

             $this->drawText($XPos, $YPos, $CaptionTxt, array("Align"=>TEXT_ALIGN_BOTTOMLEFT));

             $YPos = $YPos - $CaptionHeight - $HorizontalMargin;
         }

         $this->Shadow = $RestoreShadow;
     }

     /* Draw a basic shape */
     public function drawShape($X, $Y, $Shape, $PlotSize, $PlotBorder, $BorderSize, $R, $G, $B, $Alpha, $BorderR, $BorderG, $BorderB, $BorderAlpha)
     {
         if ($Shape == SERIE_SHAPE_FILLEDCIRCLE) {
             if ($PlotBorder) {
                 $this->drawFilledCircle($X, $Y, $PlotSize+$BorderSize, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha));
             }
             $this->drawFilledCircle($X, $Y, $PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_FILLEDSQUARE) {
             if ($PlotBorder) {
                 $this->drawFilledRectangle($X-$PlotSize-$BorderSize, $Y-$PlotSize-$BorderSize, $X+$PlotSize+$BorderSize, $Y+$PlotSize+$BorderSize, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha));
             }
             $this->drawFilledRectangle($X-$PlotSize, $Y-$PlotSize, $X+$PlotSize, $Y+$PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_FILLEDTRIANGLE) {
             if ($PlotBorder) {
                 $Pos = "";
                 $Pos[]=$X;
                 $Pos[]=$Y-$PlotSize-$BorderSize;
                 $Pos[]=$X-$PlotSize-$BorderSize;
                 $Pos[]=$Y+$PlotSize+$BorderSize;
                 $Pos[]=$X+$PlotSize+$BorderSize;
                 $Pos[]=$Y+$PlotSize+$BorderSize;
                 $this->drawPolygon($Pos, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha));
             }

             $Pos = "";
             $Pos[]=$X;
             $Pos[]=$Y-$PlotSize;
             $Pos[]=$X-$PlotSize;
             $Pos[]=$Y+$PlotSize;
             $Pos[]=$X+$PlotSize;
             $Pos[]=$Y+$PlotSize;
             $this->drawPolygon($Pos, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_TRIANGLE) {
             $this->drawLine($X, $Y-$PlotSize, $X-$PlotSize, $Y+$PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
             $this->drawLine($X-$PlotSize, $Y+$PlotSize, $X+$PlotSize, $Y+$PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
             $this->drawLine($X+$PlotSize, $Y+$PlotSize, $X, $Y-$PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_SQUARE) {
             $this->drawRectangle($X-$PlotSize, $Y-$PlotSize, $X+$PlotSize, $Y+$PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_CIRCLE) {
             $this->drawCircle($X, $Y, $PlotSize, $PlotSize, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_DIAMOND) {
             $Pos = "";
             $Pos[]=$X-$PlotSize;
             $Pos[]=$Y;
             $Pos[]=$X;
             $Pos[]=$Y-$PlotSize;
             $Pos[]=$X+$PlotSize;
             $Pos[]=$Y;
             $Pos[]=$X;
             $Pos[]=$Y+$PlotSize;
             $this->drawPolygon($Pos, array("NoFill"=>true,"BorderR"=>$R,"BorderG"=>$G,"BorderB"=>$B,"BorderAlpha"=>$Alpha));
         } elseif ($Shape == SERIE_SHAPE_FILLEDDIAMOND) {
             if ($PlotBorder) {
                 $Pos = "";
                 $Pos[]=$X-$PlotSize-$BorderSize;
                 $Pos[]=$Y;
                 $Pos[]=$X;
                 $Pos[]=$Y-$PlotSize-$BorderSize;
                 $Pos[]=$X+$PlotSize+$BorderSize;
                 $Pos[]=$Y;
                 $Pos[]=$X;
                 $Pos[]=$Y+$PlotSize+$BorderSize;
                 $this->drawPolygon($Pos, array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha));
             }

             $Pos = "";
             $Pos[]=$X-$PlotSize;
             $Pos[]=$Y;
             $Pos[]=$X;
             $Pos[]=$Y-$PlotSize;
             $Pos[]=$X+$PlotSize;
             $Pos[]=$Y;
             $Pos[]=$X;
             $Pos[]=$Y+$PlotSize;
             $this->drawPolygon($Pos, array("R"=>$R,"G"=>$G,"B"=>$B,"Alpha"=>$Alpha));
         }
     }

     public function drawPolygonChart($Points, $Format="")
     {
         $R			= isset($Format["R"]) ? $Format["R"] : 0;
         $G			= isset($Format["G"]) ? $Format["G"] : 0;
         $B			= isset($Format["B"]) ? $Format["B"] : 0;
         $Alpha		= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
         $NoFill		= isset($Format["NoFill"]) ? $Format["NoFill"] : false;
         $NoBorder		= isset($Format["NoBorder"]) ? $Format["NoBorder"] : false;
         $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : $R;
         $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : $G;
         $BorderB		= isset($Format["BorderB"]) ? $Format["BorderB"] : $B;
         $BorderAlpha 	= isset($Format["BorderAlpha"]) ? $Format["BorderAlpha"] : $Alpha / 2;
         $Surrounding	= isset($Format["Surrounding"]) ? $Format["Surrounding"] : null;
         $Threshold         = isset($Format["Threshold"]) ? $Format["Threshold"] : null;

         if ($Surrounding != null) {
             $BorderR = $R+$Surrounding;
             $BorderG = $G+$Surrounding;
             $BorderB = $B+$Surrounding;
         }

         $RestoreShadow = $this->Shadow;
         $this->Shadow = false;

         $AllIntegers = true;
         for ($i=0;$i<=count($Points)-2;$i=$i+2) {
             if ($this->getFirstDecimal($Points[$i+1]) != 0) {
                 $AllIntegers = false;
             }
         }

         /* Convert polygon to segments */
         $Segments = "";
         for ($i=2;$i<=count($Points)-2;$i=$i+2) {
             $Segments[] = array("X1"=>$Points[$i-2],"Y1"=>$Points[$i-1],"X2"=>$Points[$i],"Y2"=>$Points[$i+1]);
         }
         $Segments[] = array("X1"=>$Points[$i-2],"Y1"=>$Points[$i-1],"X2"=>$Points[0],"Y2"=>$Points[1]);

         /* Simplify straight lines */
         $Result = "";
         $inHorizon = false;
         $LastX = VOID;
         foreach ($Segments as $Key => $Pos) {
             if ($Pos["Y1"] != $Pos["Y2"]) {
                 if ($inHorizon) {
                     $inHorizon = false;
                     $Result[] = array("X1"=>$LastX,"Y1"=>$Pos["Y1"],"X2"=>$Pos["X1"],"Y2"=>$Pos["Y1"]);
                 }

                 $Result[] = array("X1"=>$Pos["X1"],"Y1"=>$Pos["Y1"],"X2"=>$Pos["X2"],"Y2"=>$Pos["Y2"]);
             } else {
                 if (!$inHorizon) {
                     $inHorizon = true;
                     $LastX = $Pos["X1"];
                 }
             }
         }
         $Segments = $Result;

         /* Do we have something to draw */
         if ($Segments == "") {
             return(0);
         }

         /* For segments debugging purpose */
         //foreach($Segments as $Key => $Pos)
         // echo $Pos["X1"].",".$Pos["Y1"].",".$Pos["X2"].",".$Pos["Y2"]."\r\n";

         /* Find out the min & max Y boundaries */
         $MinY = OUT_OF_SIGHT;
         $MaxY = OUT_OF_SIGHT;
         foreach ($Segments as $Key => $Coords) {
             if ($MinY == OUT_OF_SIGHT || $MinY > min($Coords["Y1"], $Coords["Y2"])) {
                 $MinY = min($Coords["Y1"], $Coords["Y2"]);
             }
             if ($MaxY == OUT_OF_SIGHT || $MaxY < max($Coords["Y1"], $Coords["Y2"])) {
                 $MaxY = max($Coords["Y1"], $Coords["Y2"]);
             }
         }

         if ($AllIntegers) {
             $YStep = 1;
         } else {
             $YStep = .5;
         }

         $MinY = floor($MinY);
         $MaxY = floor($MaxY);

         /* Scan each Y lines */
         $DefaultColor = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
         $DebugLine = 0;
         $DebugColor = $this->allocateColor($this->Picture, 255, 0, 0, 100);

         $MinY = floor($MinY);
         $MaxY = floor($MaxY);
         $YStep = 1;

         if (!$NoFill) {
             //if ( $DebugLine ) { $MinY = $DebugLine; $MaxY = $DebugLine; }
             for ($Y=$MinY;$Y<=$MaxY;$Y=$Y+$YStep) {
                 $Intersections = "";
                 $LastSlope = null;
                 $RestoreLast = "-";
                 foreach ($Segments as $Key => $Coords) {
                     $X1 = $Coords["X1"];
                     $X2 = $Coords["X2"];
                     $Y1 = $Coords["Y1"];
                     $Y2 = $Coords["Y2"];

                     if (min($Y1, $Y2) <= $Y && max($Y1, $Y2) >= $Y) {
                         if ($Y1 == $Y2) {
                             $X = $X1;
                         } else {
                             $X = $X1 + (($Y-$Y1)*$X2 - ($Y-$Y1)*$X1) / ($Y2-$Y1);
                         }

                         $X = floor($X);

                         if ($X2 == $X1) {
                             $Slope = "!";
                         } else {
                             $SlopeC = ($Y2 - $Y1) / ($X2 - $X1);
                             if ($SlopeC == 0) {
                                 $Slope = "=";
                             } elseif ($SlopeC > 0) {
                                 $Slope = "+";
                             } elseif ($SlopeC < 0) {
                                 $Slope = "-";
                             }
                         }

                         if (!is_array($Intersections)) {
                             $Intersections[] = $X;
                         } elseif (!in_array($X, $Intersections)) {
                             $Intersections[] = $X;
                         } elseif (in_array($X, $Intersections)) {
                             if ($Y == $DebugLine) {
                                 echo $Slope."/".$LastSlope."(".$X.") ";
                             }

                             if ($Slope == "=" && $LastSlope == "-") {
                                 $Intersections[] = $X;
                             }
                             if ($Slope != $LastSlope && $LastSlope != "!" && $LastSlope != "=") {
                                 $Intersections[] = $X;
                             }
                             if ($Slope != $LastSlope && $LastSlope == "!" && $Slope == "+") {
                                 $Intersections[] = $X;
                             }
                         }

                         if (is_array($Intersections) && in_array($X, $Intersections) && $LastSlope == "=" && ($Slope == "-")) {
                             $Intersections[] = $X;
                         }

                         $LastSlope = $Slope;
                     }
                 }
                 if ($RestoreLast != "-") {
                     $Intersections[] = $RestoreLast;
                     echo "@".$Y."\r\n";
                 }

                 if (is_array($Intersections)) {
                     sort($Intersections);

                     if ($Y == $DebugLine) {
                         print_r($Intersections);
                     }

                     /* Remove NULL plots */
                     $Result = "";
                     for ($i=0;$i<=count($Intersections)-1;$i=$i+2) {
                         if (isset($Intersections[$i+1])) {
                             if ($Intersections[$i] != $Intersections[$i+1]) {
                                 $Result[] = $Intersections[$i];
                                 $Result[] = $Intersections[$i+1];
                             }
                         }
                     }

                     if (is_array($Result)) {
                         $Intersections = $Result;

                         $LastX = OUT_OF_SIGHT;
                         foreach ($Intersections as $Key => $X) {
                             if ($LastX == OUT_OF_SIGHT) {
                                 $LastX = $X;
                             } elseif ($LastX != OUT_OF_SIGHT) {
                                 if ($this->getFirstDecimal($LastX) > 1) {
                                     $LastX++;
                                 }

                                 $Color = $DefaultColor;
                                 if ($Threshold != null) {
                                     foreach ($Threshold as $Key => $Parameters) {
                                         if ($Y <= $Parameters["MinX"] && $Y >= $Parameters["MaxX"]) {
                                             if (isset($Parameters["R"])) {
                                                 $R = $Parameters["R"];
                                             } else {
                                                 $R = 0;
                                             }
                                             if (isset($Parameters["G"])) {
                                                 $G = $Parameters["G"];
                                             } else {
                                                 $G = 0;
                                             }
                                             if (isset($Parameters["B"])) {
                                                 $B = $Parameters["B"];
                                             } else {
                                                 $B = 0;
                                             }
                                             if (isset($Parameters["Alpha"])) {
                                                 $Alpha = $Parameters["Alpha"];
                                             } else {
                                                 $Alpha = 100;
                                             }
                                             $Color = $this->allocateColor($this->Picture, $R, $G, $B, $Alpha);
                                         }
                                     }
                                 }

                                 imageline($this->Picture, $LastX, $Y, $X, $Y, $Color);

                                 if ($Y == $DebugLine) {
                                     imageline($this->Picture, $LastX, $Y, $X, $Y, $DebugColor);
                                 }

                                 $LastX = OUT_OF_SIGHT;
                             }
                         }
                     }
                 }
             }
         }

         /* Draw the polygon border, if required */
         if (!$NoBorder) {
             foreach ($Segments as $Key => $Coords) {
                 $this->drawLine($Coords["X1"], $Coords["Y1"], $Coords["X2"], $Coords["Y2"], array("R"=>$BorderR,"G"=>$BorderG,"B"=>$BorderB,"Alpha"=>$BorderAlpha,"Threshold"=>$Threshold));
             }
         }

         $this->Shadow = $RestoreShadow;
     }

     /* Return the abscissa margin */
     public function getAbscissaMargin($Data)
     {
         foreach ($Data["Axis"] as $AxisID => $Values) {
             if ($Values["Identity"] == AXIS_X) {
                 return($Values["Margin"]);
             }
         }
         return(0);
     }
 }
